大幅调整的一个版本，待测试

backend/.env.example

@@ -1,5 +1,5 @@
 # Application Settings
-APP_NAME=Cosmo - Deep Space Explorer
+APP_NAME=COSMO - Deep Space Explorer
 API_PREFIX=/api
 
 # CORS Settings (comma-separated list)

backend/CONFIG.md

@@ -51,7 +51,7 @@ REDIS_MAX_CONNECTIONS=50       # 最大连接数
 ### 3. 应用配置
 
 ```bash
-APP_NAME=Cosmo - Deep Space Explorer
+APP_NAME=COSMO - Deep Space Explorer
 API_PREFIX=/api
 CORS_ORIGINS=["*"]            # 开发环境允许所有来源
 CACHE_TTL_DAYS=3              # NASA API 缓存天数

backend/app/api/celestial_body.py

@@ -25,6 +25,7 @@ class CelestialBodyCreate(BaseModel):
     name_zh: Optional[str] = None
     type: str
     description: Optional[str] = None
+    details: Optional[str] = None
     is_active: bool = True
     extra_data: Optional[Dict[str, Any]] = None
 
@@ -34,6 +35,7 @@ class CelestialBodyUpdate(BaseModel):
     name_zh: Optional[str] = None
     type: Optional[str] = None
     description: Optional[str] = None
+    details: Optional[str] = None
     is_active: Optional[bool] = None
     extra_data: Optional[Dict[str, Any]] = None
 
@@ -112,7 +114,7 @@ async def get_celestial_nasa_data(
     try:
         # Fetch raw text from Horizons using the body_id
         # Note: body.id corresponds to JPL Horizons ID
-        raw_text = await horizons_service.get_object_data_raw(body.id, db)
+        raw_text = await horizons_service.get_object_data_raw(body.id)
         return {"id": body.id, "name": body.name, "raw_data": raw_text}
     except Exception as e:
         logger.error(f"Failed to fetch raw data for {body_id}: {e}")
@@ -173,6 +175,7 @@ async def get_body_info(body_id: str, db: AsyncSession = Depends(get_db)):
         name=body.name,
         type=body.type,
         description=body.description,
+        details=body.details,
         launch_date=extra_data.get("launch_date"),
         status=extra_data.get("status"),
     )
@@ -212,6 +215,7 @@ async def list_bodies(
                 "name_zh": body.name_zh,
                 "type": body.type,
                 "description": body.description,
+                "details": body.details,
                 "is_active": body.is_active,
                 "resources": resources_by_type,
                 "has_resources": len(resources) > 0,

backend/app/api/celestial_position.py

@@ -76,7 +76,8 @@ async def get_celestial_positions(
             # Check Redis cache first (persistent across restarts)
             start_str = "now"
             end_str = "now"
-            redis_key = make_cache_key("positions", start_str, end_str, step)
+            body_ids_str = body_ids if body_ids else "all"
+            redis_key = make_cache_key("positions", start_str, end_str, step, body_ids_str)
             redis_cached = await redis_cache.get(redis_key)
             if redis_cached is not None:
                 logger.info("Cache hit (Redis) for recent positions")
@@ -194,7 +195,8 @@ async def get_celestial_positions(
                 # Cache in Redis for persistence across restarts
                 start_str = start_dt.isoformat() if start_dt else "now"
                 end_str = end_dt.isoformat() if end_dt else "now"
-                redis_key = make_cache_key("positions", start_str, end_str, step)
+                body_ids_str = body_ids if body_ids else "all"
+                redis_key = make_cache_key("positions", start_str, end_str, step, body_ids_str)
                 await redis_cache.set(redis_key, bodies_data, get_ttl_seconds("current_positions"))
                 return CelestialDataResponse(bodies=bodies_data)
             else:
@@ -204,7 +206,8 @@ async def get_celestial_positions(
         # Check Redis cache first (persistent across restarts)
         start_str = start_dt.isoformat() if start_dt else "now"
         end_str = end_dt.isoformat() if end_dt else "now"
-        redis_key = make_cache_key("positions", start_str, end_str, step)
+        body_ids_str = body_ids if body_ids else "all"  # Include body_ids in cache key
+        redis_key = make_cache_key("positions", start_str, end_str, step, body_ids_str)
         redis_cached = await redis_cache.get(redis_key)
         if redis_cached is not None:
             logger.info("Cache hit (Redis) for positions")
@@ -222,7 +225,9 @@ async def get_celestial_positions(
 
         # Filter bodies if body_ids specified
         if body_id_list:
+            logger.info(f"Filtering bodies from {len(all_bodies)} total. Requested IDs: {body_id_list}")
             all_bodies = [b for b in all_bodies if b.id in body_id_list]
+            logger.info(f"After filtering: {len(all_bodies)} bodies. IDs: {[b.id for b in all_bodies]}")
 
         use_db_cache = True
         db_cached_bodies = []
@@ -334,7 +339,7 @@ async def get_celestial_positions(
                 # Special handling for Cassini (mission ended 2017-09-15)
                 elif body.id == "-82":
                     cassini_date = datetime(2017, 9, 15, 11, 58, 0)
-                    pos_data = horizons_service.get_body_positions(body.id, cassini_date, cassini_date, step)
+                    pos_data = await horizons_service.get_body_positions(body.id, cassini_date, cassini_date, step)
                     positions_list = [
                         {"time": p.time.isoformat(), "x": p.x, "y": p.y, "z": p.z}
                         for p in pos_data
@@ -342,7 +347,7 @@ async def get_celestial_positions(
 
                 else:
                     # Download from NASA Horizons
-                    pos_data = await horizons_service.get_body_positions(body.id, db, start_dt, end_dt, step)
+                    pos_data = await horizons_service.get_body_positions(body.id, start_dt, end_dt, step)
                     positions_list = [
                         {"time": p.time.isoformat(), "x": p.x, "y": p.y, "z": p.z}
                         for p in pos_data

backend/app/api/nasa_download.py

@@ -217,15 +217,16 @@ async def download_positions(
                         continue
 
                     # Download from NASA Horizons
+                    logger.info(f"Downloading position for body {body_id} on {date_str}")
                     positions = await horizons_service.get_body_positions(
                         body_id=body_id,
-                        db=db,
                         start_time=target_date,
                         end_time=target_date,
                         step="1d"
                     )
 
                     if positions and len(positions) > 0:
+                        logger.info(f"Received position data for body {body_id}: x={positions[0].x}, y={positions[0].y}, z={positions[0].z}")
                         # Save to database
                         position_data = [{
                             "time": target_date,
@@ -243,6 +244,17 @@ async def download_positions(
                             source="nasa_horizons",
                             session=db
                         )
+                        logger.info(f"Saved position for body {body_id} on {date_str}")
+
+                        # Invalidate caches for this date to ensure fresh data is served
+                        from app.services.redis_cache import redis_cache, make_cache_key
+                        start_str = target_date.isoformat()
+                        end_str = target_date.isoformat()
+                        # Clear both "all bodies" cache and specific body cache
+                        for body_ids_str in ["all", body_id]:
+                            redis_key = make_cache_key("positions", start_str, end_str, "1d", body_ids_str)
+                            await redis_cache.delete(redis_key)
+                            logger.debug(f"Invalidated cache: {redis_key}")
 
                         body_results["dates"].append({
                             "date": date_str,
@@ -283,3 +295,89 @@ async def download_positions(
     except Exception as e:
         logger.error(f"Download failed: {e}")
         raise HTTPException(status_code=500, detail=str(e))
+
+
+@router.post("/delete")
+async def delete_positions(
+    request: DownloadPositionRequest,
+    db: AsyncSession = Depends(get_db)
+):
+    """
+    Delete position data for specified bodies on specified dates
+
+    Args:
+    - body_ids: List of celestial body IDs
+    - dates: List of dates (YYYY-MM-DD format)
+
+    Returns:
+    - Summary of deleted data
+    """
+    logger.info(f"Deleting positions for {len(request.body_ids)} bodies on {len(request.dates)} dates")
+
+    try:
+        total_deleted = 0
+        from sqlalchemy import text
+
+        for body_id in request.body_ids:
+            # Invalidate caches for this body
+            from app.services.redis_cache import redis_cache, make_cache_key
+            
+            # We need to loop dates to delete specific records
+            for date_str in request.dates:
+                try:
+                    # Parse date
+                    target_date = datetime.strptime(date_str, "%Y-%m-%d")
+                    # End of day
+                    end_of_day = target_date.replace(hour=23, minute=59, second=59, microsecond=999999)
+
+                    # Execute deletion
+                    # Using text() for raw SQL is often simpler for range deletes, 
+                    # but ORM is safer. Let's use ORM with execute.
+                    # But since position_service might not have delete, we do it here.
+                    
+                    stmt = text("""
+                        DELETE FROM positions 
+                        WHERE body_id = :body_id 
+                        AND time >= :start_time 
+                        AND time <= :end_time
+                    """)
+                    
+                    result = await db.execute(stmt, {
+                        "body_id": body_id, 
+                        "start_time": target_date,
+                        "end_time": end_of_day
+                    })
+                    
+                    deleted_count = result.rowcount
+                    total_deleted += deleted_count
+                    
+                    if deleted_count > 0:
+                        logger.info(f"Deleted {deleted_count} records for {body_id} on {date_str}")
+                        
+                        # Invalidate cache for this specific date/body combo
+                        # Note: This is approximate as cache keys might cover ranges
+                        start_str = target_date.isoformat()
+                        end_str = target_date.isoformat()
+                        # Clear both "all bodies" cache and specific body cache
+                        for body_ids_str in ["all", body_id]:
+                            # We try to clear '1d' step cache
+                            redis_key = make_cache_key("positions", start_str, end_str, "1d", body_ids_str)
+                            await redis_cache.delete(redis_key)
+
+                except Exception as e:
+                    logger.error(f"Failed to delete data for {body_id} on {date_str}: {e}")
+
+        await db.commit()
+
+        # Clear general patterns to be safe if ranges were cached
+        await redis_cache.clear_pattern("positions:*")
+
+        return {
+            "message": f"Successfully deleted {total_deleted} position records",
+            "total_deleted": total_deleted
+        }
+
+    except Exception as e:
+        await db.rollback()
+        logger.error(f"Delete failed: {e}")
+        raise HTTPException(status_code=500, detail=str(e))

backend/app/models/celestial.py

@@ -45,6 +45,7 @@ class BodyInfo(BaseModel):
     name: str
     type: Literal["planet", "probe", "star", "dwarf_planet", "satellite", "comet"]
     description: str
+    details: str | None = None
     launch_date: str | None = None
     status: str | None = None
 
@@ -200,4 +201,26 @@ CELESTIAL_BODIES = {
         "type": "dwarf_planet",
         "description": "鸟神星，柯伊伯带中第二亮的天体",
     },
+    # Comets / Interstellar Objects
+    "1I": {
+        "name": "1I/'Oumuamua",
+        "name_zh": "奥陌陌",
+        "type": "comet",
+        "description": "原定名 1I/2017 U1，是已知第一颗经过太阳系的星际天体。它于2017年10月18日（UT）在距离地球约0.2 AU（30,000,000 km；19,000,000 mi）处被泛星1号望远镜发现，并在极端双曲线的轨道上运行。",
+        "status": "active",
+    },
+    "3I": {
+        "name": "3I/ATLAS",
+        "name_zh": "3I/ATLAS",
+        "type": "comet",
+        "description": "又称C/2025 N1 (ATLAS)，是一颗星际彗星，由位于智利里奥乌尔塔多的小行星陆地撞击持续报警系统于2025年7月1日发现",
+        "status": "active",
+    },
+    "90000030": {
+        "name": "1P/Halley",
+        "name_zh": "哈雷彗星",
+        "type": "comet",
+        "description": "哈雷彗星（正式名称为1P/Halley）是著名的短周期彗星，每隔75-76年就能从地球上被观测到[5]，亦是唯一能用肉眼直接从地球看到的短周期彗星，人的一生中可能经历两次其来访。",
+        "status": "active",
+    },
 }

backend/app/models/db/celestial_body.py

@@ -18,6 +18,7 @@ class CelestialBody(Base):
     name_zh = Column(String(200), nullable=True, comment="Chinese name")
     type = Column(String(50), nullable=False, comment="Body type")
     description = Column(Text, nullable=True, comment="Description")
+    details = Column(Text, nullable=True, comment="Detailed description (Markdown)")
     is_active = Column(Boolean, nullable=True, comment="Active status for probes (True=active, False=inactive)")
     extra_data = Column(JSONB, nullable=True, comment="Extended metadata (JSON)")
     created_at = Column(TIMESTAMP, server_default=func.now())

backend/app/services/horizons.py

@@ -91,26 +91,23 @@ class HorizonsService:
             if end_time is None:
                 end_time = start_time
 
-            # Format time for Horizons (YYYY-MM-DD HH:MM)
-            # Horizons accepts ISO-like format without 'T'
-            start_str = start_time.strftime('%Y-%m-%d %H:%M')
-            end_str = end_time.strftime('%Y-%m-%d %H:%M')
-            
-            # Special case for single point query (start = end)
-            # Horizons requires START != STOP for ranges, but we can handle single point 
-            # by making a very small range or just asking for 1 step.
-            # Actually Horizons API is fine with start=end if we don't ask for range?
-            # Let's keep using range parameters as standard.
-            if start_time == end_time:
-                # Just add 1 minute for range, but we only parse the first result
-                end_dummy = end_time + timedelta(minutes=1)
-                end_str = end_dummy.strftime('%Y-%m-%d %H:%M')
-                # Override step to ensure we get the start point
-                # But wait, '1d' step might skip. 
-                # If start==end, we want exactly one point.
-                # We can't use '1' count in API easily via URL params without STEP_SIZE?
-                # Let's just use the provided step.
-            
+            # Format time for Horizons
+            # NASA Horizons accepts: 'YYYY-MM-DD' or 'YYYY-MM-DD HH:MM:SS'
+            # When querying a single point (same start/end date), we need STOP > START
+            # So we add 1 second and use precise time format
+
+            if start_time.date() == end_time.date():
+                # Single day query - use the date at 00:00 and next second
+                start_str = start_time.strftime('%Y-%m-%d')
+                # For STOP, add 1 day to satisfy STOP > START requirement
+                # But use step='1d' so we only get one data point
+                end_time_adjusted = start_time + timedelta(days=1)
+                end_str = end_time_adjusted.strftime('%Y-%m-%d')
+            else:
+                # Multi-day range query
+                start_str = start_time.strftime('%Y-%m-%d')
+                end_str = end_time.strftime('%Y-%m-%d')
+
             logger.info(f"Querying Horizons (httpx) for body {body_id} from {start_str} to {end_str}")
 
             url = "https://ssd.jpl.nasa.gov/api/horizons.api"
@@ -126,223 +123,16 @@ class HorizonsService:
                 "START_TIME": start_str,
                 "STOP_TIME": end_str,
                 "STEP_SIZE": step,
-                "CSV_FORMAT": "YES"
+                "CSV_FORMAT": "YES",
+                "OUT_UNITS": "AU-D"
             }
 
-            # Configure proxy if available
-            client_kwargs = {"timeout": settings.nasa_api_timeout}
-            if settings.proxy_dict:
-                client_kwargs["proxies"] = settings.proxy_dict
-
-            async with httpx.AsyncClient(**client_kwargs) as client:
-                response = await client.get(url, params=params)
-
-                if response.status_code != 200:
-                    raise Exception(f"NASA API returned status {response.status_code}")
-
-                return self._parse_vectors(response.text)
-
-        except Exception as e:
-            logger.error(f"Error querying Horizons for body {body_id}: {str(e)}")
-            raise
-
-    def _parse_vectors(self, text: str) -> list[Position]:
-        """
-        Parse Horizons CSV output for vector data
-        
-        Format looks like:
-        $$SOE
-        2460676.500000000, A.D. 2025-Jan-01 00:00:00.0000,  9.776737278236609E-01, -1.726677228793678E-01, -1.636678733289160E-05, ...
-        $$EOE
-        """
-        positions = []
-        
-        # Extract data block between $$SOE and $$EOE
-        match = re.search(r'\$\$SOE(.*?)\$\$EOE', text, re.DOTALL)
-        if not match:
-            logger.warning("No data block ($$SOE...$$EOE) found in Horizons response")
-            # Log a snippet of text for debugging
-            logger.debug(f"Response snippet: {text[:200]}...")
-            return []
-            
-        data_block = match.group(1).strip()
-        lines = data_block.split('\n')
-        
-        for line in lines:
-            parts = [p.strip() for p in line.split(',')]
-            if len(parts) < 5:
-                continue
-                
-            try:
-                # Index 0: JD, 1: Date, 2: X, 3: Y, 4: Z, 5: VX, 6: VY, 7: VZ
-                # Time parsing: 2460676.500000000 is JD. 
-                # A.D. 2025-Jan-01 00:00:00.0000 is Calendar.
-                # We can use JD or parse the string. Using JD via astropy is accurate.
-                
-                jd_str = parts[0]
-                time_obj = Time(float(jd_str), format="jd").datetime
-                
-                x = float(parts[2])
-                y = float(parts[3])
-                z = float(parts[4])
-                
-                # Velocity if available (indices 5, 6, 7)
-                vx = float(parts[5]) if len(parts) > 5 else None
-                vy = float(parts[6]) if len(parts) > 6 else None
-                vz = float(parts[7]) if len(parts) > 7 else None
-                
-                pos = Position(
-                    time=time_obj,
-                    x=x, 
-                    y=y, 
-                    z=z,
-                    vx=vx,
-                    vy=vy,
-                    vz=vz
-                )
-                positions.append(pos)
-            except ValueError as e:
-                logger.warning(f"Failed to parse line: {line}. Error: {e}")
-                continue
-                
-        return positions
-
-"""
-NASA JPL Horizons data query service
-"""
-from datetime import datetime, timedelta
-# from astroquery.jplhorizons import Horizons # Removed astroquery dependency
-from astropy.time import Time # Kept astropy for Time object
-import logging
-import re
-import httpx
-import os
-
-from app.models.celestial import Position, CelestialBody
-from app.config import settings
-
-logger = logging.getLogger(__name__)
-
-
-class HorizonsService:
-    """Service for querying NASA JPL Horizons system"""
-
-    def __init__(self):
-        """Initialize the service"""
-        self.location = "@sun"  # Heliocentric coordinates
-        # Proxy is handled via settings.proxy_dict in each request
-
-    async def get_object_data_raw(self, body_id: str) -> str:
-        """
-        Get raw object data (terminal style text) from Horizons
-
-        Args:
-            body_id: JPL Horizons ID
-
-        Returns:
-            Raw text response from NASA
-        """
-        url = "https://ssd.jpl.nasa.gov/api/horizons.api"
-        # Ensure ID is quoted for COMMAND
-        cmd_val = f"'{body_id}'" if not body_id.startswith("'") else body_id
-
-        params = {
-            "format": "text",
-            "COMMAND": cmd_val,
-            "OBJ_DATA": "YES",
-            "MAKE_EPHEM": "NO",
-            "EPHEM_TYPE": "VECTORS",
-            "CENTER": "@sun"
-        }
-
-        try:
             # Configure proxy if available
             client_kwargs = {"timeout": settings.nasa_api_timeout}
             if settings.proxy_dict:
                 client_kwargs["proxies"] = settings.proxy_dict
                 logger.info(f"Using proxy for NASA API: {settings.proxy_dict}")
 
-            async with httpx.AsyncClient(**client_kwargs) as client:
-                logger.info(f"Fetching raw data for body {body_id} with timeout {settings.nasa_api_timeout}s")
-                response = await client.get(url, params=params)
-
-                if response.status_code != 200:
-                    raise Exception(f"NASA API returned status {response.status_code}")
-
-                return response.text
-        except Exception as e:
-            logger.error(f"Error fetching raw data for {body_id}: {str(e)}")
-            raise
-
-    async def get_body_positions(
-        self,
-        body_id: str,
-        start_time: datetime | None = None,
-        end_time: datetime | None = None,
-        step: str = "1d",
-    ) -> list[Position]:
-        """
-        Get positions for a celestial body over a time range
-
-        Args:
-            body_id: JPL Horizons ID (e.g., '-31' for Voyager 1)
-            start_time: Start datetime (default: now)
-            end_time: End datetime (default: now)
-            step: Time step (e.g., '1d' for 1 day, '1h' for 1 hour)
-
-        Returns:
-            List of Position objects
-        """
-        try:
-            # Set default times
-            if start_time is None:
-                start_time = datetime.utcnow()
-            if end_time is None:
-                end_time = start_time
-
-            # Format time for Horizons (YYYY-MM-DD HH:MM)
-            # Horizons accepts ISO-like format without 'T'
-            start_str = start_time.strftime('%Y-%m-%d %H:%M')
-            end_str = end_time.strftime('%Y-%m-%d %H:%M')
-            
-            # Special case for single point query (start = end)
-            # Horizons requires START != STOP for ranges, but we can handle single point 
-            # by making a very small range or just asking for 1 step.
-            # Actually Horizons API is fine with start=end if we don't ask for range?
-            # Let's keep using range parameters as standard.
-            if start_time == end_time:
-                # Just add 1 minute for range, but we only parse the first result
-                end_dummy = end_time + timedelta(minutes=1)
-                end_str = end_dummy.strftime('%Y-%m-%d %H:%M')
-                # Override step to ensure we get the start point
-                # But wait, '1d' step might skip. 
-                # If start==end, we want exactly one point.
-                # We can't use '1' count in API easily via URL params without STEP_SIZE?
-                # Let's just use the provided step.
-            
-            logger.info(f"Querying Horizons (httpx) for body {body_id} from {start_str} to {end_str}")
-
-            url = "https://ssd.jpl.nasa.gov/api/horizons.api"
-            cmd_val = f"'{body_id}'" if not body_id.startswith("'") else body_id
-
-            params = {
-                "format": "text",
-                "COMMAND": cmd_val,
-                "OBJ_DATA": "NO",
-                "MAKE_EPHEM": "YES",
-                "EPHEM_TYPE": "VECTORS",
-                "CENTER": self.location,
-                "START_TIME": start_str,
-                "STOP_TIME": end_str,
-                "STEP_SIZE": step,
-                "CSV_FORMAT": "YES"
-            }
-
-            # Configure proxy if available
-            client_kwargs = {"timeout": settings.nasa_api_timeout}
-            if settings.proxy_dict:
-                client_kwargs["proxies"] = settings.proxy_dict
-
             async with httpx.AsyncClient(**client_kwargs) as client:
                 response = await client.get(url, params=params)
 
@@ -358,20 +148,20 @@ class HorizonsService:
     def _parse_vectors(self, text: str) -> list[Position]:
         """
         Parse Horizons CSV output for vector data
-        
+
         Format looks like:
         $$SOE
         2460676.500000000, A.D. 2025-Jan-01 00:00:00.0000,  9.776737278236609E-01, -1.726677228793678E-01, -1.636678733289160E-05, ...
         $$EOE
         """
         positions = []
-        
+
         # Extract data block between $$SOE and $$EOE
         match = re.search(r'\$\$SOE(.*?)\$\$EOE', text, re.DOTALL)
         if not match:
             logger.warning("No data block ($$SOE...$$EOE) found in Horizons response")
-            # Log a snippet of text for debugging
-            logger.debug(f"Response snippet: {text[:200]}...")
+            # Log full response for debugging
+            logger.info(f"Full response for debugging:\n{text}")
             return []
             
         data_block = match.group(1).strip()
@@ -413,7 +203,7 @@ class HorizonsService:
             except ValueError as e:
                 logger.warning(f"Failed to parse line: {line}. Error: {e}")
                 continue
-                
+
         return positions
 
     async def search_body_by_name(self, name: str, db: AsyncSession) -> dict:
@@ -436,10 +226,11 @@ class HorizonsService:
                 "CENTER": "@ssb" # Search from Solar System Barycenter for consistent object IDs
             }
 
-            timeout = await self._get_timeout(db)
+            timeout = settings.nasa_api_timeout
             client_kwargs = {"timeout": timeout}
             if settings.proxy_dict:
                 client_kwargs["proxies"] = settings.proxy_dict
+                logger.info(f"Using proxy for NASA API: {settings.proxy_dict}")
 
             async with httpx.AsyncClient(**client_kwargs) as client:
                 response = await client.get(url, params=params)
@@ -449,6 +240,9 @@ class HorizonsService:
 
                 response_text = response.text
 
+                # Log full response for debugging (temporarily)
+                logger.info(f"Full NASA API response for '{name}':\n{response_text}")
+
                 # Check for "Ambiguous target name"
                 if "Ambiguous target name" in response_text:
                     logger.warning(f"Ambiguous target name for: {name}")
@@ -470,14 +264,53 @@ class HorizonsService:
                         "error": "未找到匹配的天体，请检查名称或 ID"
                     }
 
-                # Parse canonical name and ID from response (e.g., "Target body name: Jupiter Barycenter (599)")
-                target_name_match = re.search(r"Target body name: (.+?)\s+\((\-?\d+)\)", response_text)
+                # Try multiple parsing patterns for different response formats
+                # Pattern 1: "Target body name: Jupiter Barycenter (599)"
+                target_name_match = re.search(r"Target body name:\s*(.+?)\s+\((\-?\d+)\)", response_text)
+
+                if not target_name_match:
+                    # Pattern 2: " Revised: Mar 12, 2021           Ganymede / (Jupiter)                       503"
+                    # This pattern appears in the header section of many bodies
+                    revised_match = re.search(r"Revised:.*?\s{2,}(.+?)\s{2,}(\-?\d+)\s*$", response_text, re.MULTILINE)
+                    if revised_match:
+                        full_name = revised_match.group(1).strip()
+                        numeric_id = revised_match.group(2).strip()
+                        short_name = full_name.split('/')[0].strip()  # Remove parent body info like "/ (Jupiter)"
+
+                        logger.info(f"Found target (pattern 2): {full_name} with ID: {numeric_id}")
+                        return {
+                            "success": True,
+                            "id": numeric_id,
+                            "name": short_name,
+                            "full_name": full_name,
+                            "error": None
+                        }
+
+                if not target_name_match:
+                    # Pattern 3: Look for body name in title section (works for comets and other objects)
+                    # Example: "JPL/HORIZONS                  ATLAS (C/2025 N1)            2025-Dec-"
+                    title_match = re.search(r"JPL/HORIZONS\s+(.+?)\s{2,}", response_text)
+                    if title_match:
+                        full_name = title_match.group(1).strip()
+                        # For this pattern, the ID was in the original COMMAND, use it
+                        numeric_id = name.strip("'\"")
+                        short_name = full_name.split('(')[0].strip()
+
+                        logger.info(f"Found target (pattern 3): {full_name} with ID: {numeric_id}")
+                        return {
+                            "success": True,
+                            "id": numeric_id,
+                            "name": short_name,
+                            "full_name": full_name,
+                            "error": None
+                        }
+
                 if target_name_match:
                     full_name = target_name_match.group(1).strip()
                     numeric_id = target_name_match.group(2).strip()
                     short_name = full_name.split('(')[0].strip() # Remove any part after '('
 
-                    logger.info(f"Found target: {full_name} with ID: {numeric_id}")
+                    logger.info(f"Found target (pattern 1): {full_name} with ID: {numeric_id}")
                     return {
                         "success": True,
                         "id": numeric_id,
@@ -487,7 +320,7 @@ class HorizonsService:
                     }
                 else:
                     # Fallback if specific pattern not found, might be a valid but weird response
-                    logger.warning(f"Could not parse target name/ID from response for: {name}. Response snippet: {response_text[:200]}")
+                    logger.warning(f"Could not parse target name/ID from response for: {name}. Response snippet: {response_text[:500]}")
                     return {
                         "success": False,
                         "id": None,

backend/app/services/nasa_worker.py

@@ -62,7 +62,6 @@ async def download_positions_task(task_id: int, body_ids: List[str], dates: List
                             # Download
                             positions = await horizons_service.get_body_positions(
                                 body_id=body_id,
-                                db=db,
                                 start_time=target_date,
                                 end_time=target_date,
                                 step="1d"

backend/app/services/orbit_service.py

@@ -152,7 +152,6 @@ class OrbitService:
             # Get positions from Horizons (synchronous call)
             positions = await horizons_service.get_body_positions(
                 body_id=body_id,
-                db=session,
                 start_time=start_time,
                 end_time=end_time,
                 step=f"{step_days}d"

backend/scripts/check_db_status.py

@@ -0,0 +1,68 @@
+"""
+Check database status: bodies, positions, resources
+"""
+import asyncio
+import os
+import sys
+from datetime import datetime
+
+# Add backend directory to path
+sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), '..')))
+
+from app.database import get_db
+from app.models.db.celestial_body import CelestialBody
+from app.models.db.position import Position
+from app.models.db.resource import Resource
+from sqlalchemy import select, func
+
+async def check_status():
+    """Check database status"""
+    print("🔍 Checking database status...")
+    
+    async for session in get_db():
+        try:
+            # 1. Check Celestial Bodies
+            stmt = select(func.count(CelestialBody.id))
+            result = await session.execute(stmt)
+            body_count = result.scalar()
+            print(f"✅ Celestial Bodies: {body_count}")
+
+            # 2. Check Positions
+            stmt = select(func.count(Position.id))
+            result = await session.execute(stmt)
+            position_count = result.scalar()
+            print(f"✅ Total Positions: {position_count}")
+            
+            # Check positions for Sun (10) and Earth (399)
+            for body_id in ['10', '399']:
+                stmt = select(func.count(Position.id)).where(Position.body_id == body_id)
+                result = await session.execute(stmt)
+                count = result.scalar()
+                print(f"   - Positions for {body_id}: {count}")
+                
+                if count > 0:
+                    # Get latest position date
+                    stmt = select(func.max(Position.time)).where(Position.body_id == body_id)
+                    result = await session.execute(stmt)
+                    latest_date = result.scalar()
+                    print(f"     Latest date: {latest_date}")
+
+            # 3. Check Resources
+            stmt = select(func.count(Resource.id))
+            result = await session.execute(stmt)
+            resource_count = result.scalar()
+            print(f"✅ Total Resources: {resource_count}")
+
+            # Check resources for Sun (10)
+            stmt = select(Resource).where(Resource.body_id == '10')
+            result = await session.execute(stmt)
+            resources = result.scalars().all()
+            print(f"   - Resources for Sun (10): {len(resources)}")
+            for r in resources:
+                print(f"     - {r.resource_type}: {r.file_path}")
+
+        finally:
+            break
+
+if __name__ == "__main__":
+    asyncio.run(check_status())

backend/scripts/check_sun_data.py

@@ -0,0 +1,50 @@
+import asyncio
+import os
+import sys
+from datetime import datetime
+
+# Add backend directory to path
+sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), '..')))
+
+from app.database import get_db
+from app.models.db import Position
+from sqlalchemy import select, func
+
+async def check_sun_data():
+    """Check data for 2025-12-04 00:00:00"""
+    async for session in get_db():
+        try:
+            target_time = datetime(2025, 12, 4, 0, 0, 0)
+            print(f"Checking data for all bodies at {target_time}...")
+            
+            # Get all bodies
+            from app.models.db.celestial_body import CelestialBody
+            stmt = select(CelestialBody.id, CelestialBody.name, CelestialBody.type).where(CelestialBody.is_active != False)
+            result = await session.execute(stmt)
+            all_bodies = result.all()
+            print(f"Total active bodies: {len(all_bodies)}")
+            
+            # Check positions for each
+            missing_bodies = []
+            for body_id, body_name, body_type in all_bodies:
+                stmt = select(func.count(Position.id)).where(
+                    Position.body_id == body_id,
+                    Position.time == target_time
+                )
+                result = await session.execute(stmt)
+                count = result.scalar()
+                if count == 0:
+                    missing_bodies.append(f"{body_name} ({body_id}) [{body_type}]")
+            
+            if missing_bodies:
+                print(f"❌ Missing data for {len(missing_bodies)} bodies:")
+                for b in missing_bodies:
+                    print(f"   - {b}")
+            else:
+                print("✅ All active bodies have data for this time!")
+
+        finally:
+            break
+
+if __name__ == "__main__":
+    asyncio.run(check_sun_data())

backend/scripts/fix_sun_data.py

@@ -0,0 +1,58 @@
+"""
+Fix missing Sun position
+"""
+import asyncio
+import os
+import sys
+from datetime import datetime
+
+# Add backend directory to path
+sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), '..')))
+
+from app.database import get_db
+from app.models.db import Position
+
+async def fix_sun_position():
+    """Insert missing position for Sun at 2025-12-04 00:00:00"""
+    async for session in get_db():
+        try:
+            target_time = datetime(2025, 12, 4, 0, 0, 0)
+            print(f"Fixing Sun position for {target_time}...")
+            
+            # Check if it exists first (double check)
+            from sqlalchemy import select, func
+            stmt = select(func.count(Position.id)).where(
+                Position.body_id == '10',
+                Position.time == target_time
+            )
+            result = await session.execute(stmt)
+            count = result.scalar()
+            
+            if count > 0:
+                print("✅ Position already exists!")
+                return
+
+            # Insert
+            new_pos = Position(
+                body_id='10',
+                time=target_time,
+                x=0.0,
+                y=0.0,
+                z=0.0,
+                vx=0.0,
+                vy=0.0,
+                vz=0.0,
+                source='calculated'
+            )
+            session.add(new_pos)
+            await session.commit()
+            print("✅ Successfully inserted Sun position!")
+
+        except Exception as e:
+            print(f"❌ Error: {e}")
+            await session.rollback()
+        finally:
+            break
+
+if __name__ == "__main__":
+    asyncio.run(fix_sun_position())

backend/scripts/inspect_sun.py

@@ -0,0 +1,39 @@
+import asyncio
+import os
+import sys
+from sqlalchemy import select
+from datetime import datetime
+
+# Add backend directory to path
+sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), '..')))
+
+from app.database import get_db
+from app.models.db import Position
+
+async def inspect_sun_positions():
+    async for session in get_db():
+        try:
+            # List all positions for Sun
+            stmt = select(Position.time).where(Position.body_id == '10').order_by(Position.time.desc()).limit(10)
+            result = await session.execute(stmt)
+            times = result.scalars().all()
+            
+            print("Recent Sun positions:")
+            for t in times:
+                print(f" - {t} (type: {type(t)})")
+
+            # Check specifically for 2025-12-04
+            target = datetime(2025, 12, 4, 0, 0, 0)
+            stmt = select(Position).where(
+                Position.body_id == '10',
+                Position.time == target
+            )
+            result = await session.execute(stmt)
+            pos = result.scalar()
+            print(f"\nExact match for {target}: {pos}")
+            
+        finally:
+            break
+
+if __name__ == "__main__":
+    asyncio.run(inspect_sun_positions())

backend/scripts/reset_positions.py

@@ -0,0 +1,53 @@
+"""
+Reset position data to fix units (KM -> AU)
+"""
+import asyncio
+import os
+import sys
+
+# Add backend directory to path
+sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), '..')))
+
+from app.database import get_db
+from app.models.db import Position
+from app.services.redis_cache import redis_cache
+from sqlalchemy import text
+
+async def reset_data():
+    """Clear positions and cache to force re-fetch in AU"""
+    print("🧹 Clearing old data (KM) to prepare for AU...")
+    
+    async for session in get_db():
+        try:
+            # Clear positions table
+            print("   Truncating positions table...")
+            await session.execute(text("TRUNCATE TABLE positions RESTART IDENTITY CASCADE"))
+            
+            # Clear nasa_cache table (if it exists as a table, or if it's just redis?)
+            # nasa_cache is in db models?
+            # Let's check models/db directory...
+            # It seems nasa_cache is a table based on `nasa_cache_service`.
+            print("   Truncating nasa_cache table...")
+            try:
+                await session.execute(text("TRUNCATE TABLE nasa_cache RESTART IDENTITY CASCADE"))
+            except Exception as e:
+                print(f"   (Note: nasa_cache might not exist or failed: {e})")
+
+            await session.commit()
+            print("✅ Database tables cleared.")
+
+            # Clear Redis
+            await redis_cache.connect()
+            await redis_cache.clear_pattern("positions:*")
+            await redis_cache.clear_pattern("nasa:*")
+            print("✅ Redis cache cleared.")
+            await redis_cache.disconnect()
+
+        except Exception as e:
+            print(f"❌ Error: {e}")
+            await session.rollback()
+        finally:
+            break
+
+if __name__ == "__main__":
+    asyncio.run(reset_data())

frontend/package.json

@@ -18,9 +18,13 @@
     "axios": "^1.13.2",
     "html2canvas": "^1.4.1",
     "lucide-react": "^0.555.0",
+    "markdown-it": "^14.1.0",
     "react": "^19.2.0",
     "react-dom": "^19.2.0",
+    "react-markdown": "^10.1.0",
+    "react-markdown-editor-lite": "^1.3.4",
     "react-router-dom": "^7.9.6",
+    "remark-gfm": "^4.0.1",
     "three": "^0.181.2"
   },
   "devDependencies": {

frontend/src/App.tsx

@@ -14,6 +14,7 @@ import { InterstellarTicker } from './components/InterstellarTicker';
 import { ControlPanel } from './components/ControlPanel';
 import { AuthModal } from './components/AuthModal';
 import { MessageBoard } from './components/MessageBoard';
+import { BodyDetailOverlay } from './components/BodyDetailOverlay'; // Import the new overlay component
 import { auth } from './utils/auth';
 import type { CelestialBody } from './types';
 import { useToast } from './contexts/ToastContext';
@@ -32,6 +33,7 @@ function App() {
   const [showOrbits, setShowOrbits] = useState(true);
   const [isSoundOn, setIsSoundOn] = useState(false);
   const [showMessageBoard, setShowMessageBoard] = useState(false);
+  const [showDetailOverlayId, setShowDetailOverlayId] = useState<string | null>(null); // State for detail overlay
 
   // Initialize state from localStorage
   useEffect(() => {
@@ -75,6 +77,19 @@ function App() {
   const loading = isTimelineMode ? historicalLoading : realTimeLoading;
   const error = isTimelineMode ? historicalError : realTimeError;
 
+  // Debug: log bodies when they change
+  useEffect(() => {
+    console.log('[App] Bodies updated:', {
+      isTimelineMode,
+      totalBodies: bodies.length,
+      bodiesWithPositions: bodies.filter(b => b.positions && b.positions.length > 0).length,
+      bodyTypes: bodies.reduce((acc, b) => {
+        acc[b.type] = (acc[b.type] || 0) + 1;
+        return acc;
+      }, {} as Record<string, number>)
+    });
+  }, [bodies, isTimelineMode]);
+
   const [selectedBody, setSelectedBody] = useState<CelestialBody | null>(null);
   const { trajectoryPositions } = useTrajectory(selectedBody);
 
@@ -94,6 +109,11 @@ function App() {
     }
   }, [isTimelineMode, cutoffDate]);
 
+  // Handle viewing body details
+  const handleViewDetails = useCallback((body: CelestialBody) => {
+    setShowDetailOverlayId(body.id);
+  }, []);
+
   // Filter probes and planets from all bodies
   const probes = bodies.filter((b) => b.type === 'probe');
   const planets = bodies.filter((b) =>
@@ -213,6 +233,7 @@ function App() {
         onBodySelect={handleBodySelect}
         resetTrigger={resetTrigger}
         toast={toast}
+        onViewDetails={handleViewDetails}
       />
 
       {/* Timeline Controller */}
@@ -241,6 +262,12 @@ function App() {
           </div>
         </div>
       )}
+
+      {/* Body Detail Overlay */}
+      <BodyDetailOverlay
+        bodyId={showDetailOverlayId}
+        onClose={() => setShowDetailOverlayId(null)}
+      />
     </div>
   );
 }

frontend/src/components/BodyDetailOverlay.tsx

@@ -0,0 +1,145 @@
+import { useRef, useEffect, useState } from 'react';
+import { createPortal } from 'react-dom';
+import { XCircle } from 'lucide-react';
+import { Canvas, useFrame } from '@react-three/fiber';
+import { OrbitControls } from '@react-three/drei';
+import ReactMarkdown from 'react-markdown';
+import remarkGfm from 'remark-gfm';
+
+import { request } from '../utils/request';
+import { useToast } from '../contexts/ToastContext';
+import { BodyViewer } from './BodyViewer';
+import type { CelestialBody as CelestialBodyType } from '../types';
+
+interface BodyDetailOverlayProps {
+  bodyId: string | null;
+  onClose: () => void;
+}
+
+// Custom camera control for automatic rotation
+function AutoRotateCamera() {
+  useFrame((state) => {
+    state.camera.position.x = Math.sin(state.clock.elapsedTime * 0.1) * 3;
+    state.camera.position.z = Math.cos(state.clock.elapsedTime * 0.1) * 3;
+    state.camera.lookAt(0, 0, 0);
+  });
+  return null;
+}
+
+
+export function BodyDetailOverlay({ bodyId, onClose }: BodyDetailOverlayProps) {
+  const [bodyData, setBodyData] = useState<CelestialBodyType | null>(null);
+  const [loading, setLoading] = useState(false);
+  const toast = useToast();
+
+  useEffect(() => {
+    if (!bodyId) {
+      setBodyData(null);
+      return;
+    }
+
+    setLoading(true);
+    request.get(`/celestial/info/${bodyId}`)
+      .then(response => {
+        setBodyData(response.data);
+      })
+      .catch(error => {
+        console.error("Failed to fetch body details:", error);
+        toast.error("加载天体详情失败");
+        onClose(); // Close overlay on error
+      })
+      .finally(() => {
+        setLoading(false);
+      });
+  }, [bodyId, onClose, toast]);
+
+  if (!bodyId || !bodyData) {
+    return null;
+  }
+
+  // Create portal to render outside the main app div
+  return createPortal(
+    <div className="fixed inset-0 z-[200] flex items-center justify-center bg-black/80 backdrop-blur-lg">
+      <div className="relative w-[90vw] h-[90vh] bg-gray-900/90 border border-blue-500/30 rounded-lg shadow-2xl flex p-4 gap-4">
+        {/* Close Button */}
+        <button
+          onClick={onClose}
+          className="absolute top-4 right-4 z-10 text-gray-400 hover:text-red-400 transition-colors"
+        >
+          <XCircle size={32} />
+        </button>
+
+        {/* Left Panel: 3D Viewer */}
+        <div className="w-1/2 h-full bg-black rounded-lg border border-gray-700 relative">
+          {loading ? (
+            <div className="absolute inset-0 flex items-center justify-center text-blue-300">加载中...</div>
+          ) : (
+            <Canvas camera={{ position: [3, 2, 3], fov: 60 }}>
+              <ambientLight intensity={0.5} />
+              <pointLight position={[10, 10, 10]} intensity={1} />
+              <pointLight position={[-10, -10, -10]} intensity={0.5} color="#88aaff" />
+              <directionalLight position={[0, 0, 5]} intensity={0.5} /> {/* Frontal light */}
+              <directionalLight position={[0, 0, -5]} intensity={0.2} /> {/* Back light */}
+
+              <AutoRotateCamera /> {/* Auto rotate for presentation */}
+
+              <OrbitControls
+                enableZoom={true}
+                enablePan={false}
+                enableRotate={true}
+                minDistance={0.5}
+                maxDistance={10}
+              />
+              <BodyViewer body={bodyData} />
+            </Canvas>
+          )}
+        </div>
+
+        {/* Right Panel: Details */}
+        <div className="w-1/2 h-full bg-gray-800 rounded-lg border border-gray-700 p-6 overflow-y-auto">
+          <h1 className="text-4xl font-bold text-white mb-2">{bodyData.name_zh || bodyData.name}</h1>
+          <p className="text-xl text-blue-300 mb-4">{bodyData.name}</p>
+
+          <div className="text-gray-400 text-sm mb-4">
+            <span className="font-semibold text-white">类型:</span> {bodyData.type}
+            {bodyData.description && <> <span className="mx-2">|</span> {bodyData.description}</>}
+          </div>
+
+          {bodyData.details ? (
+            <div className="prose prose-invert max-w-none">
+              <ReactMarkdown
+                remarkPlugins={[remarkGfm]}
+                components={{
+                  // Custom component styling without className prop
+                  h1: ({node, ...props}) => <h1 className="text-3xl font-bold text-white mt-6 mb-4" {...props} />,
+                  h2: ({node, ...props}) => <h2 className="text-2xl font-bold text-white mt-5 mb-3" {...props} />,
+                  h3: ({node, ...props}) => <h3 className="text-xl font-bold text-white mt-4 mb-2" {...props} />,
+                  p: ({node, ...props}) => <p className="text-gray-300 mb-3 leading-relaxed" {...props} />,
+                  ul: ({node, ...props}) => <ul className="list-disc list-inside text-gray-300 mb-3 space-y-1" {...props} />,
+                  ol: ({node, ...props}) => <ol className="list-decimal list-inside text-gray-300 mb-3 space-y-1" {...props} />,
+                  li: ({node, ...props}) => <li className="text-gray-300" {...props} />,
+                  strong: ({node, ...props}) => <strong className="text-white font-semibold" {...props} />,
+                  em: ({node, ...props}) => <em className="text-blue-300 italic" {...props} />,
+                  code: ({node, inline, ...props}: any) =>
+                    inline
+                      ? <code className="bg-gray-700 text-blue-300 px-1.5 py-0.5 rounded text-sm font-mono" {...props} />
+                      : <code className="block bg-gray-700 text-blue-300 p-3 rounded text-sm font-mono overflow-x-auto mb-3" {...props} />,
+                  blockquote: ({node, ...props}) => <blockquote className="border-l-4 border-blue-500 pl-4 text-gray-400 italic mb-3" {...props} />,
+                  a: ({node, ...props}) => <a className="text-blue-400 hover:text-blue-300 underline" {...props} />,
+                  table: ({node, ...props}) => <table className="w-full border-collapse mb-3" {...props} />,
+                  th: ({node, ...props}) => <th className="border border-gray-600 bg-gray-700 text-white px-3 py-2 text-left" {...props} />,
+                  td: ({node, ...props}) => <td className="border border-gray-600 text-gray-300 px-3 py-2" {...props} />,
+                }}
+              >
+                {bodyData.details}
+              </ReactMarkdown>
+            </div>
+          ) : (
+            <p className="text-gray-500 italic">暂无详细信息。</p>
+          )}
+        </div>
+      </div>
+    </div>,
+    document.body // Render outside root element
+  );
+}

frontend/src/components/BodyViewer.tsx

@@ -0,0 +1,388 @@
+import { useRef, useMemo, useState, useEffect, Suspense } from 'react';
+import { Mesh, Group } from 'three';
+import * as THREE from 'three';
+import { useGLTF, useTexture } from '@react-three/drei';
+import { useFrame } from '@react-three/fiber';
+import type { CelestialBody as CelestialBodyType } from '../types';
+import { fetchBodyResources } from '../utils/api';
+import { getCelestialSize } from '../config/celestialSizes';
+
+interface BodyViewerProps {
+  body: CelestialBodyType;
+}
+
+// Reusable component to render just the 3D model/mesh of a celestial body
+export function BodyViewer({ body }: BodyViewerProps) {
+  const meshRef = useRef<Mesh>(null);
+  const groupRef = useRef<Group>(null);
+  const [texturePath, setTexturePath] = useState<string | null | undefined>(undefined);
+  const [modelPath, setModelPath] = useState<string | null | undefined>(undefined);
+  const [modelScale, setModelScale] = useState<number>(1.0);
+  const [loadError, setLoadError] = useState<boolean>(false);
+
+  // Determine size and appearance
+  const appearance = useMemo(() => {
+    if (body.type === 'star') {
+      return { size: 0.4, emissive: '#FDB813', emissiveIntensity: 1.5 };
+    }
+    if (body.type === 'comet') {
+      return { size: getCelestialSize(body.name, body.type), emissive: '#000000', emissiveIntensity: 0 };
+    }
+    if (body.type === 'satellite') {
+      return { size: getCelestialSize(body.name, body.type), emissive: '#888888', emissiveIntensity: 0.4 };
+    }
+    return { size: getCelestialSize(body.name, body.type), emissive: '#000000', emissiveIntensity: 0 };
+  }, [body.name, body.type]);
+
+  // Fetch resources (texture or model)
+  useEffect(() => {
+    setLoadError(false);
+    setModelPath(undefined);
+    setTexturePath(undefined);
+
+    const loadResources = async () => {
+      try {
+        const response = await fetchBodyResources(body.id, body.type === 'probe' ? 'model' : 'texture');
+        if (response.resources.length > 0) {
+          const mainResource = response.resources[0];
+          const fullPath = `/upload/${mainResource.file_path}`;
+
+          if (body.type === 'probe') {
+            useGLTF.preload(fullPath); // Preload GLTF
+            setModelPath(fullPath);
+            setModelScale(mainResource.extra_data?.scale || 1.0);
+          } else {
+            setTexturePath(fullPath);
+          }
+        } else {
+          // No resources found
+          if (body.type === 'probe') setModelPath(null);
+          else setTexturePath(null);
+        }
+      } catch (err) {
+        console.error(`Failed to load resource for ${body.name}:`, err);
+        setLoadError(true);
+        if (body.type === 'probe') setModelPath(null);
+        else setTexturePath(null);
+      }
+    };
+    loadResources();
+  }, [body.id, body.name, body.type]);
+
+  // Handle Probe Model rendering
+  if (body.type === 'probe' && modelPath !== undefined) {
+    if (modelPath === null || loadError) {
+      // Fallback sphere for probes if model fails
+      return (
+        <mesh ref={meshRef}>
+          <sphereGeometry args={[0.15, 32, 32]} />
+          <meshStandardMaterial color="#ff0000" emissive="#ff0000" emissiveIntensity={0.8} />
+        </mesh>
+      );
+    }
+    return <ProbeModelViewer modelPath={modelPath} modelScale={modelScale} />;
+  }
+
+  // Handle Celestial Body (Planet, Star, etc.) rendering
+  if (texturePath !== undefined) {
+    return (
+      <PlanetModelViewer
+        body={body}
+        size={appearance.size}
+        emissive={appearance.emissive}
+        emissiveIntensity={appearance.emissiveIntensity}
+        texturePath={texturePath}
+        meshRef={meshRef}
+      />
+    );
+  }
+
+  // Show nothing while loading resources
+  return null;
+}
+
+// Sub-component for Probe models
+function ProbeModelViewer({ modelPath, modelScale }: { modelPath: string; modelScale: number }) {
+  const groupRef = useRef<Group>(null);
+  const gltf = useGLTF(modelPath);
+  const scene = gltf.scene;
+
+  const optimalScale = useMemo(() => {
+    if (!scene) return 1;
+    const box = new THREE.Box3().setFromObject(scene);
+    const size = new THREE.Vector3();
+    box.getSize(size);
+    const maxDimension = Math.max(size.x, size.y, size.z);
+    const targetSize = 0.35; // Standardize view
+    const calculatedScale = maxDimension > 0 ? targetSize / maxDimension : 0.3;
+    const finalScale = Math.max(0.2, Math.min(1.0, calculatedScale));
+    return finalScale * modelScale;
+  }, [scene, modelScale]);
+
+  const configuredScene = useMemo(() => {
+    if (!scene) return null;
+    const clonedScene = scene.clone();
+    clonedScene.traverse((child: any) => {
+      if (child.isMesh) {
+        if (child.material) {
+          if (Array.isArray(child.material)) {
+            child.material = child.material.map((mat: any) => {
+              const clonedMat = mat.clone();
+              clonedMat.depthTest = true;
+              clonedMat.depthWrite = true;
+              return clonedMat;
+            });
+          } else {
+            child.material = child.material.clone();
+            child.material.depthTest = true;
+            child.material.depthWrite = true;
+          }
+        }
+      }
+    });
+    return clonedScene;
+  }, [scene]);
+
+  if (!configuredScene) return null;
+
+  return (
+    <Suspense fallback={null}>
+      <group ref={groupRef}>
+        <primitive object={configuredScene} scale={optimalScale} />
+      </group>
+    </Suspense>
+  );
+}
+
+// Sub-component for Planet models
+function PlanetModelViewer({ body, size, emissive, emissiveIntensity, texturePath, meshRef }: {
+  body: CelestialBodyType;
+  size: number;
+  emissive: string;
+  emissiveIntensity: number;
+  texturePath: string | null;
+  meshRef: React.RefObject<Mesh>;
+}) {
+  const texture = texturePath ? useTexture(texturePath) : null;
+
+  // Rotation animation
+  useFrame((_, delta) => {
+    if (meshRef.current) {
+      meshRef.current.rotation.y += delta * 0.1;
+    }
+  });
+
+  // Irregular Comet Nucleus - potato-like shape
+  function IrregularNucleus({ size, texture }: { size: number; texture: THREE.Texture | null }) {
+    const nucleusRef = useRef<Mesh>(null);
+
+    // Create irregular geometry by deforming a sphere
+    const geometry = useMemo(() => {
+      const geo = new THREE.SphereGeometry(size, 64, 64); // Higher resolution for detail view
+      const positions = geo.attributes.position;
+
+      // Deform vertices to create irregular shape
+      for (let i = 0; i < positions.count; i++) {
+        const x = positions.getX(i);
+        const y = positions.getY(i);
+        const z = positions.getZ(i);
+
+        // Create multiple noise frequencies for complex shape
+        const noise1 = Math.sin(x * 3.5) * Math.cos(y * 2.7) * Math.sin(z * 4.2);
+        const noise2 = Math.cos(x * 5.1) * Math.sin(y * 4.3) * Math.cos(z * 3.8);
+        const noise3 = Math.sin(x * 7.2) * Math.sin(y * 6.1) * Math.cos(z * 5.5);
+
+        const deformation = 1 + (noise1 * 0.25 + noise2 * 0.15 + noise3 * 0.1);
+
+        positions.setXYZ(i, x * deformation, y * deformation, z * deformation);
+      }
+
+      geo.computeVertexNormals();
+      return geo;
+    }, [size]);
+
+    // Slow rotation
+    useFrame((_, delta) => {
+      if (nucleusRef.current) {
+        nucleusRef.current.rotation.y += delta * 0.05;
+        nucleusRef.current.rotation.z += delta * 0.02;
+      }
+    });
+
+    return (
+      <mesh ref={nucleusRef} geometry={geometry}>
+        {texture ? (
+          <meshStandardMaterial
+            map={texture}
+            roughness={0.9}
+            metalness={0.1}
+            color="#b8b8b8"
+          />
+        ) : (
+          <meshStandardMaterial
+            color="#6b6b6b"
+            roughness={0.95}
+            metalness={0.05}
+          />
+        )}
+      </mesh>
+    );
+  }
+
+  // Enhanced Coma (gas/dust cloud) around comet nucleus
+  function CometComa({ radius }: { radius: number }) {
+    const positions = useMemo(() => {
+      const count = 300; // More particles for detail view
+      const p = new Float32Array(count * 3);
+      for (let i = 0; i < count; i++) {
+        // Denser near center, spreading outward
+        const r = radius * (0.8 + Math.pow(Math.random(), 1.5) * 4); // 0.8x to 4.8x radius
+        const theta = Math.random() * Math.PI * 2;
+        const phi = Math.acos(2 * Math.random() - 1);
+
+        p[i * 3] = r * Math.sin(phi) * Math.cos(theta);
+        p[i * 3 + 1] = r * Math.sin(phi) * Math.sin(theta);
+        p[i * 3 + 2] = r * Math.cos(phi);
+      }
+      return p;
+    }, [radius]);
+
+    const pointsRef = useRef<THREE.Points>(null);
+
+    // Animate coma
+    useFrame((state, delta) => {
+      if (pointsRef.current) {
+        pointsRef.current.rotation.y += delta * 0.05;
+        // Pulsing effect
+        const scale = 1 + Math.sin(state.clock.elapsedTime * 0.5) * 0.1;
+        pointsRef.current.scale.setScalar(scale);
+      }
+    });
+
+    return (
+      <>
+        {/* Inner bright coma */}
+        <points ref={pointsRef}>
+          <bufferGeometry>
+            <bufferAttribute attach="position" args={[positions, 3]} />
+          </bufferGeometry>
+          <pointsMaterial
+            size={radius * 0.8}
+            color="#88ccff"
+            transparent
+            opacity={0.7}
+            sizeAttenuation={true}
+            blending={THREE.AdditiveBlending}
+            depthWrite={false}
+          />
+        </points>
+
+        {/* Middle glow layer */}
+        <mesh>
+          <sphereGeometry args={[radius * 2.5, 32, 32]} />
+          <meshBasicMaterial
+            color="#66aadd"
+            transparent
+            opacity={0.15}
+            side={THREE.BackSide}
+            blending={THREE.AdditiveBlending}
+            depthWrite={false}
+          />
+        </mesh>
+
+        {/* Outer diffuse glow */}
+        <mesh>
+          <sphereGeometry args={[radius * 4.5, 32, 32]} />
+          <meshBasicMaterial
+            color="#4488aa"
+            transparent
+            opacity={0.12}
+            side={THREE.BackSide}
+            blending={THREE.AdditiveBlending}
+            depthWrite={false}
+          />
+        </mesh>
+      </>
+    );
+  }
+
+  // Saturn Rings component - multiple rings for band effect
+  function SaturnRings() {
+    return (
+      <group rotation={[Math.PI / 2, 0, 0]}>
+        {/* Inner bright ring */}
+        <mesh>
+          <ringGeometry args={[1.4, 1.6, 32]} />
+          <meshBasicMaterial color="#D4B896" transparent opacity={0.7} side={THREE.DoubleSide} />
+        </mesh>
+        {/* Middle darker band */}
+        <mesh>
+          <ringGeometry args={[1.6, 1.75, 32]} />
+          <meshBasicMaterial color="#8B7355" transparent opacity={0.5} side={THREE.DoubleSide} />
+        </mesh>
+        {/* Outer bright ring */}
+        <mesh>
+          <ringGeometry args={[1.75, 2.0, 32]} />
+          <meshBasicMaterial color="#C4A582" transparent opacity={0.6} side={THREE.DoubleSide} />
+        </mesh>
+        {/* Cassini Division (gap) */}
+        <mesh>
+          <ringGeometry args={[2.0, 2.05, 32]} />
+          <meshBasicMaterial color="#000000" transparent opacity={0.2} side={THREE.DoubleSide} />
+        </mesh>
+        {/* A Ring (outer) */}
+        <mesh>
+          <ringGeometry args={[2.05, 2.2, 32]} />
+          <meshBasicMaterial color="#B89968" transparent opacity={0.5} side={THREE.DoubleSide} />
+        </mesh>
+      </group>
+    );
+  }
+
+  return (
+    <group>
+      {/* Use irregular nucleus for comets, regular sphere for others */}
+      {body.type === 'comet' ? (
+        <>
+          <IrregularNucleus size={size} texture={texture} />
+          <CometComa radius={size} />
+        </>
+      ) : (
+        <mesh ref={meshRef} position={[0,0,0]}>
+          <sphereGeometry args={[size, 64, 64]} /> {/* Higher resolution for detail view */}
+          {texture ? (
+            <meshStandardMaterial
+              map={texture}
+              emissive={emissive}
+              emissiveIntensity={emissiveIntensity}
+              roughness={body.type === 'star' ? 0 : 0.7}
+              metalness={0.1}
+            />
+          ) : (
+            <meshStandardMaterial
+              color="#888888"
+              emissive={emissive}
+              emissiveIntensity={emissiveIntensity}
+              roughness={0.7}
+              metalness={0.1}
+            />
+          )}
+        </mesh>
+      )}
+
+      {/* Saturn Rings */}
+      {body.id === '699' && <SaturnRings />}
+
+      {/* Sun glow effect */}
+      {body.type === 'star' && (
+        <>
+          <pointLight intensity={10} distance={400} color="#fff8e7" />
+          <mesh>
+            <sphereGeometry args={[size * 1.8, 32, 32]} />
+            <meshBasicMaterial color="#FDB813" transparent opacity={0.35} />
+          </mesh>
+        </>
+      )}
+    </group>
+  );
+}

frontend/src/components/CelestialBody.tsx

@@ -5,11 +5,12 @@ import { useRef, useMemo, useState, useEffect } from 'react';
 import { Mesh, DoubleSide } from 'three'; // Removed AdditiveBlending here
 import * as THREE from 'three'; // Imported as * to access AdditiveBlending, SpriteMaterial, CanvasTexture
 import { useFrame } from '@react-three/fiber';
-import { useTexture, Html } from '@react-three/drei';
+import { useTexture, Billboard } from '@react-three/drei';
 import type { CelestialBody as CelestialBodyType } from '../types';
 import { calculateRenderPosition, getOffsetDescription } from '../utils/renderPosition';
 import { fetchBodyResources } from '../utils/api';
 import { PLANET_SIZES, SATELLITE_SIZES, getCelestialSize } from '../config/celestialSizes';
+import { createLabelTexture } from '../utils/labelTexture';
 
 interface CelestialBodyProps {
   body: CelestialBodyType;
@@ -23,7 +24,7 @@ function SaturnRings() {
     <group rotation={[Math.PI / 2, 0, 0]}>
       {/* Inner bright ring */}
       <mesh>
-        <ringGeometry args={[1.4, 1.6, 64]} />
+        <ringGeometry args={[1.4, 1.6, 32]} />
         <meshBasicMaterial
           color="#D4B896"
           transparent
@@ -33,7 +34,7 @@ function SaturnRings() {
       </mesh>
       {/* Middle darker band */}
       <mesh>
-        <ringGeometry args={[1.6, 1.75, 64]} />
+        <ringGeometry args={[1.6, 1.75, 32]} />
         <meshBasicMaterial
           color="#8B7355"
           transparent
@@ -43,7 +44,7 @@ function SaturnRings() {
       </mesh>
       {/* Outer bright ring */}
       <mesh>
-        <ringGeometry args={[1.75, 2.0, 64]} />
+        <ringGeometry args={[1.75, 2.0, 32]} />
         <meshBasicMaterial
           color="#C4A582"
           transparent
@@ -53,7 +54,7 @@ function SaturnRings() {
       </mesh>
       {/* Cassini Division (gap) */}
       <mesh>
-        <ringGeometry args={[2.0, 2.05, 64]} />
+        <ringGeometry args={[2.0, 2.05, 32]} />
         <meshBasicMaterial
           color="#000000"
           transparent
@@ -63,7 +64,7 @@ function SaturnRings() {
       </mesh>
       {/* A Ring (outer) */}
       <mesh>
-        <ringGeometry args={[2.05, 2.2, 64]} />
+        <ringGeometry args={[2.05, 2.2, 32]} />
         <meshBasicMaterial
           color="#B89968"
           transparent
@@ -139,49 +140,137 @@ function Planet({ body, size, emissive, emissiveIntensity, allBodies, isSelected
   />;
 }
 
-// Comet Particles Component
-function CometParticles({ radius, count = 6, color = '#88ccff' }: { radius: number; count?: number; color?: string }) {
+// Irregular Comet Nucleus - potato-like shape
+function IrregularNucleus({ size, texture }: { size: number; texture: THREE.Texture | null }) {
+  const meshRef = useRef<Mesh>(null);
+
+  // Create irregular geometry by deforming a sphere
+  const geometry = useMemo(() => {
+    const geo = new THREE.SphereGeometry(size, 32, 32);
+    const positions = geo.attributes.position;
+
+    // Deform vertices to create irregular shape
+    for (let i = 0; i < positions.count; i++) {
+      const x = positions.getX(i);
+      const y = positions.getY(i);
+      const z = positions.getZ(i);
+
+      // Create multiple noise frequencies for complex shape
+      const noise1 = Math.sin(x * 3.5) * Math.cos(y * 2.7) * Math.sin(z * 4.2);
+      const noise2 = Math.cos(x * 5.1) * Math.sin(y * 4.3) * Math.cos(z * 3.8);
+      const noise3 = Math.sin(x * 7.2) * Math.sin(y * 6.1) * Math.cos(z * 5.5);
+
+      const deformation = 1 + (noise1 * 0.25 + noise2 * 0.15 + noise3 * 0.1);
+
+      positions.setXYZ(i, x * deformation, y * deformation, z * deformation);
+    }
+
+    geo.computeVertexNormals();
+    return geo;
+  }, [size]);
+
+  // Slow rotation
+  useFrame((_, delta) => {
+    if (meshRef.current) {
+      meshRef.current.rotation.y += delta * 0.05;
+      meshRef.current.rotation.z += delta * 0.02;
+    }
+  });
+
+  return (
+    <mesh ref={meshRef} geometry={geometry}>
+      {texture ? (
+        <meshStandardMaterial
+          map={texture}
+          roughness={0.9}
+          metalness={0.1}
+          color="#b8b8b8"
+        />
+      ) : (
+        <meshStandardMaterial
+          color="#6b6b6b"
+          roughness={0.95}
+          metalness={0.05}
+        />
+      )}
+    </mesh>
+  );
+}
+
+// Enhanced Coma (gas/dust cloud) around comet nucleus
+function CometComa({ radius }: { radius: number }) {
   const positions = useMemo(() => {
+    const count = 200;
     const p = new Float32Array(count * 3);
     for (let i = 0; i < count; i++) {
-      // Random spherical distribution
-      const r = radius * (1.2 + Math.random() * 2.0); // Spread: 1.2x to 3.2x radius
+      // Denser near center, spreading outward
+      const r = radius * (0.8 + Math.pow(Math.random(), 1.5) * 4); // 0.8x to 4.8x radius
       const theta = Math.random() * Math.PI * 2;
       const phi = Math.acos(2 * Math.random() - 1);
-      
+
       p[i * 3] = r * Math.sin(phi) * Math.cos(theta);
       p[i * 3 + 1] = r * Math.sin(phi) * Math.sin(theta);
       p[i * 3 + 2] = r * Math.cos(phi);
     }
     return p;
-  }, [radius, count]);
+  }, [radius]);
 
-  // Ref for animation
   const pointsRef = useRef<THREE.Points>(null);
 
-  useFrame((_, delta) => {
+  // Animate coma
+  useFrame((state, delta) => {
     if (pointsRef.current) {
-      // Subtle rotation
-      pointsRef.current.rotation.y += delta * 0.1;
-      pointsRef.current.rotation.z += delta * 0.05;
+      pointsRef.current.rotation.y += delta * 0.05;
+      // Pulsing effect
+      const scale = 1 + Math.sin(state.clock.elapsedTime * 0.5) * 0.1;
+      pointsRef.current.scale.setScalar(scale);
     }
   });
 
   return (
-    <points ref={pointsRef}>
-      <bufferGeometry>
-        <bufferAttribute attach="position" args={[positions, 3]} />
-      </bufferGeometry>
-      <pointsMaterial 
-        size={radius * 0.4} // Particle size relative to comet size
-        color={color} 
-        transparent 
-        opacity={0.6} 
-        sizeAttenuation={true} 
-        blending={THREE.AdditiveBlending}
-        depthWrite={false}
-      />
-    </points>
+    <>
+      {/* Inner bright coma */}
+      <points ref={pointsRef}>
+        <bufferGeometry>
+          <bufferAttribute attach="position" args={[positions, 3]} />
+        </bufferGeometry>
+        <pointsMaterial
+          size={radius * 0.8}
+          color="#88ccff"
+          transparent
+          opacity={0.7}
+          sizeAttenuation={true}
+          blending={THREE.AdditiveBlending}
+          depthWrite={false}
+        />
+      </points>
+
+      {/* Middle glow layer */}
+      <mesh>
+        <sphereGeometry args={[radius * 2.5, 32, 32]} />
+        <meshBasicMaterial
+          color="#66aadd"
+          transparent
+          opacity={0.15}
+          side={THREE.BackSide}
+          blending={THREE.AdditiveBlending}
+          depthWrite={false}
+        />
+      </mesh>
+
+      {/* Outer diffuse glow */}
+      <mesh>
+        <sphereGeometry args={[radius * 4.5, 32, 32]} />
+        <meshBasicMaterial
+          color="#4488aa"
+          transparent
+          opacity={0.12}
+          side={THREE.BackSide}
+          blending={THREE.AdditiveBlending}
+          depthWrite={false}
+        />
+      </mesh>
+    </>
   );
 }
 
@@ -214,42 +303,58 @@ function PlanetMesh({ body, size, emissive, emissiveIntensity, scaledPos, textur
 
   // Get offset description if this body has one
   const offsetDesc = hasOffset ? getOffsetDescription(body, allBodies) : null;
+  
+  // Label color
+  const labelColor = body.type === 'star' ? '#FDB813' : (body.type === 'comet' ? '#88ccff' : '#ffffff');
+
+  // Generate label texture
+  const labelTexture = useMemo(() => {
+    return createLabelTexture(
+      body.name_zh || body.name,
+      offsetDesc,
+      `${distance.toFixed(2)} AU`,
+      labelColor
+    );
+  }, [body.name, body.name_zh, offsetDesc, distance, labelColor]);
 
   return (
     <group position={[scaledPos.x, scaledPos.z, scaledPos.y]}>
-      <mesh ref={meshRef} renderOrder={0}>
-        <sphereGeometry args={[size, 64, 64]} />
-        {texture ? (
-          <meshStandardMaterial
-            map={texture}
-            emissive={emissive}
-            emissiveIntensity={emissiveIntensity}
-            roughness={body.type === 'star' ? 0 : 0.7}
-            metalness={0.1}
-            depthTest={true}
-            depthWrite={true}
-          />
-        ) : (
-          <meshStandardMaterial
-            color="#888888"
-            emissive={emissive}
-            emissiveIntensity={emissiveIntensity}
-            roughness={0.7}
-            metalness={0.1}
-            depthTest={true}
-            depthWrite={true}
-          />
-        )}
-      </mesh>
+      {/* Use irregular nucleus for comets, regular sphere for others */}
+      {body.type === 'comet' ? (
+        <>
+          <IrregularNucleus size={size} texture={texture} />
+          <CometComa radius={size} />
+        </>
+      ) : (
+        <mesh ref={meshRef} renderOrder={0}>
+          <sphereGeometry args={[size, 32, 32]} />
+          {texture ? (
+            <meshStandardMaterial
+              map={texture}
+              emissive={emissive}
+              emissiveIntensity={emissiveIntensity}
+              roughness={body.type === 'star' ? 0 : 0.7}
+              metalness={0.1}
+              depthTest={true}
+              depthWrite={true}
+            />
+          ) : (
+            <meshStandardMaterial
+              color="#888888"
+              emissive={emissive}
+              emissiveIntensity={emissiveIntensity}
+              roughness={0.7}
+              metalness={0.1}
+              depthTest={true}
+              depthWrite={true}
+            />
+          )}
+        </mesh>
+      )}
 
       {/* Saturn Rings */}
       {body.id === '699' && <SaturnRings />}
 
-      {/* Comet Particles */}
-      {body.type === 'comet' && (
-        <CometParticles radius={size} count={6} />
-      )}
-
       {/* Sun glow effect */}
       {body.type === 'star' && (
         <>
@@ -261,37 +366,27 @@ function PlanetMesh({ body, size, emissive, emissiveIntensity, scaledPos, textur
         </>
       )}
 
-      {/* Name label */}
-      <Html
-        position={[0, size + 0.3, 0]}
-        center
-        distanceFactor={10}
-        style={{
-          color: body.type === 'star' ? '#FDB813' : (body.type === 'comet' ? '#88ccff' : '#ffffff'),
-          fontSize: '9px', // 从 11px 减小到 9px
-          fontWeight: 'bold',
-          textShadow: '0 0 4px rgba(0,0,0,0.8)',
-          pointerEvents: 'none',
-          userSelect: 'none',
-          whiteSpace: 'nowrap',
-          opacity: isSelected ? 1 : 0.4, // 未选中时更暗淡
-          transition: 'opacity 0.3s ease',
-        }}
-      >
-        {body.name_zh || body.name}
-        {offsetDesc && (
-          <>
-            <br />
-            <span style={{ fontSize: '7px', color: '#ffaa00', opacity: isSelected ? 0.9 : 0.5 }}> {/* 从 9px 减小到 7px */}
-              {offsetDesc}
-            </span>
-          </>
-        )}
-        <br />
-        <span style={{ fontSize: '7px', opacity: isSelected ? 0.7 : 0.3 }}> {/* 从 8px 减小到 7px */}
-          {distance.toFixed(2)} AU
-        </span>
-      </Html>
+      {/* Name label using CanvasTexture */}
+      {labelTexture && (
+        <Billboard
+          position={[0, size + 1.0, 0]} // Raised slightly
+          follow={true}
+          lockX={false}
+          lockY={false}
+          lockZ={false}
+        >
+          <mesh scale={[2.5, 1.25, 1]}>
+            <planeGeometry />
+            <meshBasicMaterial 
+              map={labelTexture} 
+              transparent 
+              opacity={isSelected ? 1 : 0.6} 
+              depthWrite={false}
+              toneMapped={false} // Keep colors bright
+            />
+          </mesh>
+        </Billboard>
+      )}
     </group>
   );
 }

frontend/src/components/Constellations.tsx

@@ -2,9 +2,10 @@
  * Constellations component - renders major constellations with connecting lines
  */
 import { useEffect, useState, useMemo } from 'react';
-import { Line, Text, Billboard } from '@react-three/drei';
+import { Line, Billboard } from '@react-three/drei';
 import * as THREE from 'three';
 import { fetchStaticData } from '../utils/api';
+import { createLabelTexture } from '../utils/labelTexture';
 
 interface ConstellationStar {
   name: string;
@@ -34,6 +35,61 @@ function raDecToCartesian(ra: number, dec: number, distance: number = 5000) {
   return new THREE.Vector3(x, y, z);
 }
 
+interface ConstellationData {
+  name: string;
+  nameZh: string;
+  starPositions: THREE.Vector3[];
+  lineSegments: { start: THREE.Vector3; end: THREE.Vector3 }[];
+  center: THREE.Vector3;
+}
+
+// Sub-component for individual constellation
+function ConstellationObject({ constellation, geometry }: { constellation: ConstellationData; geometry: THREE.SphereGeometry }) {
+  // Generate label texture
+  const labelTexture = useMemo(() => {
+    return createLabelTexture(constellation.nameZh, null, "", "#6699FF");
+  }, [constellation.nameZh]);
+
+  return (
+    <group>
+      {/* Render constellation stars */}
+      {constellation.starPositions.map((pos, idx) => (
+        <mesh key={`${constellation.name}-star-${idx}`} position={pos} geometry={geometry}>
+          <meshBasicMaterial color="#FFFFFF" transparent opacity={0.6} />
+        </mesh>
+      ))}
+
+      {/* Render connecting lines */}
+      {constellation.lineSegments.map((segment, idx) => (
+        <Line
+          key={`${constellation.name}-line-${idx}`}
+          points={[segment.start, segment.end]}
+          color="#4488FF"
+          lineWidth={1}
+          transparent
+          opacity={0.3}
+        />
+      ))}
+
+      {/* Constellation name label */}
+      {labelTexture && (
+        <Billboard position={constellation.center}>
+          <mesh scale={[600, 300, 1]}>
+            <planeGeometry />
+            <meshBasicMaterial 
+              map={labelTexture} 
+              transparent 
+              opacity={0.6}
+              depthWrite={false}
+              toneMapped={false}
+            />
+          </mesh>
+        </Billboard>
+      )}
+    </group>
+  );
+}
+
 export function Constellations() {
   const [constellations, setConstellations] = useState<Constellation[]>([]);
 
@@ -92,41 +148,11 @@ export function Constellations() {
   return (
     <group>
       {constellationLines.map((constellation) => (
-        <group key={constellation.name}>
-          {/* Render constellation stars */}
-          {constellation.starPositions.map((pos, idx) => (
-            <mesh key={`${constellation.name}-star-${idx}`} position={pos} geometry={sphereGeometry}>
-              <meshBasicMaterial color="#FFFFFF" transparent opacity={0.6} />
-            </mesh>
-          ))}
-
-          {/* Render connecting lines */}
-          {constellation.lineSegments.map((segment, idx) => (
-            <Line
-              key={`${constellation.name}-line-${idx}`}
-              points={[segment.start, segment.end]}
-              color="#4488FF"
-              lineWidth={1}
-              transparent
-              opacity={0.3}
-            />
-          ))}
-
-          {/* Constellation name label */}
-          <Billboard position={constellation.center}>
-            <Text
-              fontSize={120}
-              color="#6699FF"
-              fillOpacity={0.6}
-              anchorX="center"
-              anchorY="middle"
-              outlineWidth={0}
-              outlineColor="#000000"
-            >
-              {constellation.nameZh}
-            </Text>
-          </Billboard>
-        </group>
+        <ConstellationObject 
+          key={constellation.name} 
+          constellation={constellation} 
+          geometry={sphereGeometry} 
+        />
       ))}
     </group>
   );

frontend/src/components/FocusInfo.tsx

@@ -1,4 +1,4 @@
-import { X, Ruler, Activity, Radar } from 'lucide-react';
+import { X, Ruler, Activity, Radar, Eye } from 'lucide-react';
 import { useState } from 'react';
 import { request } from '../utils/request';
 import type { CelestialBody } from '../types';
@@ -9,9 +9,10 @@ interface FocusInfoProps {
   body: CelestialBody | null;
   onClose: () => void;
   toast: ToastContextValue; // Add toast prop
+  onViewDetails?: (body: CelestialBody) => void; // Add onViewDetails prop
 }
 
-export function FocusInfo({ body, onClose, toast }: FocusInfoProps) {
+export function FocusInfo({ body, onClose, toast, onViewDetails }: FocusInfoProps) {
   const [showTerminal, setShowTerminal] = useState(false);
   const [terminalData, setTerminalData] = useState('');
   const [loading, setLoading] = useState(false);
@@ -76,6 +77,18 @@ export function FocusInfo({ body, onClose, toast }: FocusInfoProps) {
               <h2 className="text-xl font-bold text-white tracking-tight">
                 {body.name_zh || body.name}
               </h2>
+              {onViewDetails && (
+                <button
+                  onClick={(e) => {
+                    e.stopPropagation();
+                    onViewDetails(body);
+                  }}
+                  className="text-gray-400 hover:text-white transition-colors p-1 rounded-full hover:bg-white/10"
+                  title="查看详细信息"
+                >
+                  <Eye size={16} />
+                </button>
+              )}
               <span className={`px-2 py-0.5 rounded text-[10px] font-bold uppercase tracking-wider border ${
                 isProbe
                   ? 'bg-purple-500/20 border-purple-500/40 text-purple-300'

frontend/src/components/Galaxies.tsx

@@ -2,9 +2,10 @@
  * Galaxies component - renders distant galaxies as billboards
  */
 import { useEffect, useState, useMemo } from 'react';
-import { Billboard, Text, useTexture } from '@react-three/drei';
+import { Billboard } from '@react-three/drei';
 import * as THREE from 'three';
 import { fetchStaticData } from '../utils/api';
+import { createLabelTexture } from '../utils/labelTexture';
 
 interface Galaxy {
   name: string;
@@ -106,6 +107,62 @@ function calculateAngularSize(diameterKly: number, distanceMly: number): number
   return Math.max(20, angularDiameter * 8000);
 }
 
+interface GalaxyData {
+  name: string;
+  name_zh: string;
+  position: THREE.Vector3;
+  size: number;
+  texture: THREE.Texture;
+}
+
+// Sub-component for individual galaxy
+function GalaxyObject({ galaxy }: { galaxy: GalaxyData }) {
+  // Generate label texture
+  const labelTexture = useMemo(() => {
+    return createLabelTexture(galaxy.name_zh, null, "", "#DDAAFF");
+  }, [galaxy.name_zh]);
+
+  return (
+    <group>
+      <Billboard
+        position={galaxy.position}
+        follow={true}
+        lockX={false}
+        lockY={false}
+        lockZ={false}
+      >
+        {/* Galaxy texture */}
+        <mesh>
+          <planeGeometry args={[galaxy.size * 3, galaxy.size * 3]} />
+          <meshBasicMaterial
+            map={galaxy.texture}
+            transparent
+            opacity={0.8}
+            blending={THREE.AdditiveBlending}
+            depthWrite={false}
+          />
+        </mesh>
+      </Billboard>
+
+      {/* Galaxy name label - positioned slightly outward from galaxy */}
+      {labelTexture && (
+        <Billboard position={galaxy.position.clone().multiplyScalar(1.03)}>
+          <mesh scale={[300, 150, 1]}>
+            <planeGeometry />
+            <meshBasicMaterial 
+              map={labelTexture} 
+              transparent 
+              opacity={0.8}
+              depthWrite={false}
+              toneMapped={false}
+            />
+          </mesh>
+        </Billboard>
+      )}
+    </group>
+  );
+}
+
 export function Galaxies() {
   const [galaxies, setGalaxies] = useState<Galaxy[]>([]);
 
@@ -145,7 +202,8 @@ export function Galaxies() {
       const texture = createGalaxyTexture(galaxy.color, galaxy.type);
 
       return {
-        ...galaxy,
+        name: galaxy.name,
+        name_zh: galaxy.name_zh,
         position,
         size,
         texture,
@@ -160,41 +218,7 @@ export function Galaxies() {
   return (
     <group>
       {galaxyData.map((galaxy) => (
-        <group key={galaxy.name}>
-          <Billboard
-            position={galaxy.position}
-            follow={true}
-            lockX={false}
-            lockY={false}
-            lockZ={false}
-          >
-            {/* Galaxy texture */}
-            <mesh>
-              <planeGeometry args={[galaxy.size * 3, galaxy.size * 3]} />
-              <meshBasicMaterial
-                map={galaxy.texture}
-                transparent
-                opacity={0.8}
-                blending={THREE.AdditiveBlending}
-                depthWrite={false}
-              />
-            </mesh>
-          </Billboard>
-
-          {/* Galaxy name label - positioned slightly outward from galaxy */}
-          <Billboard position={galaxy.position.clone().multiplyScalar(1.03)}>
-            <Text
-              fontSize={60} // Increased from 1.5
-              color="#DDAAFF"
-              anchorX="center"
-              anchorY="middle"
-              outlineWidth={2}
-              outlineColor="#000000"
-            >
-              {galaxy.name_zh}
-            </Text>
-          </Billboard>
-        </group>
+        <GalaxyObject key={galaxy.name} galaxy={galaxy} />
       ))}
     </group>
   );

frontend/src/components/Nebulae.tsx

@@ -2,9 +2,10 @@
  * Nebulae component - renders nebulae as billboards with procedural textures
  */
 import { useEffect, useState, useMemo } from 'react';
-import { Billboard, Text } from '@react-three/drei';
+import { Billboard } from '@react-three/drei';
 import * as THREE from 'three';
 import { fetchStaticData } from '../utils/api';
+import { createLabelTexture } from '../utils/labelTexture';
 
 interface Nebula {
   name: string;
@@ -159,6 +160,63 @@ function calculateAngularSize(diameterLy: number, distanceLy: number): number {
   return Math.max(50, Math.min(300, angularDiameter * 100000));
 }
 
+interface NebulaData {
+  name: string;
+  name_zh: string;
+  type: string;
+  position: THREE.Vector3;
+  size: number;
+  texture: THREE.Texture;
+}
+
+// Sub-component for individual nebula
+function NebulaObject({ nebula }: { nebula: NebulaData }) {
+  // Generate label texture
+  const labelTexture = useMemo(() => {
+    return createLabelTexture(nebula.name_zh, null, "", "#FFAADD");
+  }, [nebula.name_zh]);
+
+  return (
+    <group>
+      <Billboard
+        position={nebula.position}
+        follow={true}
+        lockX={false}
+        lockY={false}
+        lockZ={false}
+      >
+        {/* Nebula texture */}
+        <mesh>
+          <planeGeometry args={[nebula.size * 2, nebula.size * 2]} />
+          <meshBasicMaterial
+            map={nebula.texture}
+            transparent
+            opacity={nebula.type === 'dark' ? 0.5 : 0.7}
+            blending={nebula.type === 'dark' ? THREE.NormalBlending : THREE.AdditiveBlending}
+            depthWrite={false}
+          />
+        </mesh>
+      </Billboard>
+
+      {/* Nebula name label - positioned slightly outward */}
+      {labelTexture && (
+        <Billboard position={nebula.position.clone().multiplyScalar(1.02)}>
+          <mesh scale={[300, 150, 1]}>
+            <planeGeometry />
+            <meshBasicMaterial 
+              map={labelTexture} 
+              transparent 
+              opacity={0.8}
+              depthWrite={false}
+              toneMapped={false}
+            />
+          </mesh>
+        </Billboard>
+      )}
+    </group>
+  );
+}
+
 export function Nebulae() {
   const [nebulae, setNebulae] = useState<Nebula[]>([]);
 
@@ -196,7 +254,9 @@ export function Nebulae() {
       const texture = createNebulaTexture(nebula.color, nebula.type);
 
       return {
-        ...nebula,
+        name: nebula.name,
+        name_zh: nebula.name_zh,
+        type: nebula.type,
         position,
         size,
         texture,
@@ -211,41 +271,7 @@ export function Nebulae() {
   return (
     <group>
       {nebulaData.map((nebula) => (
-        <group key={nebula.name}>
-          <Billboard
-            position={nebula.position}
-            follow={true}
-            lockX={false}
-            lockY={false}
-            lockZ={false}
-          >
-            {/* Nebula texture */}
-            <mesh>
-              <planeGeometry args={[nebula.size * 2, nebula.size * 2]} />
-              <meshBasicMaterial
-                map={nebula.texture}
-                transparent
-                opacity={nebula.type === 'dark' ? 0.5 : 0.7}
-                blending={nebula.type === 'dark' ? THREE.NormalBlending : THREE.AdditiveBlending}
-                depthWrite={false}
-              />
-            </mesh>
-          </Billboard>
-
-          {/* Nebula name label - positioned slightly outward */}
-          <Billboard position={nebula.position.clone().multiplyScalar(1.02)}>
-            <Text
-              fontSize={60} // Increased font size from 1.2
-              color="#FFAADD"
-              anchorX="center"
-              anchorY="middle"
-              outlineWidth={2}
-              outlineColor="#000000"
-            >
-              {nebula.name_zh}
-            </Text>
-          </Billboard>
-        </group>
+        <NebulaObject key={nebula.name} nebula={nebula} />
       ))}
     </group>
   );

frontend/src/components/Probe.tsx

@@ -4,11 +4,12 @@
 import { useRef, useMemo, useState, useEffect } from 'react';
 import { Group } from 'three';
 import * as THREE from 'three';
-import { useGLTF, Html } from '@react-three/drei';
+import { useGLTF, Billboard } from '@react-three/drei';
 import { useFrame } from '@react-three/fiber';
 import type { CelestialBody } from '../types';
 import { calculateRenderPosition, getOffsetDescription } from '../utils/renderPosition';
 import { fetchBodyResources } from '../utils/api';
+import { createLabelTexture } from '../utils/labelTexture';
 
 interface ProbeProps {
   body: CelestialBody;
@@ -36,9 +37,6 @@ function ProbeModel({ body, modelPath, allBodies, isSelected = false, onError, r
   const scaledPos = { x: renderPosition.x, y: renderPosition.y, z: renderPosition.z };
 
   // 2. Hook: Load GLTF
-  // We removed the try-catch block because calling hooks conditionally or inside try-catch is forbidden.
-  // If useGLTF fails, it will throw an error which should be caught by an ErrorBoundary or handled by Suspense.
-  // Since we preload in the parent, this should generally be safe.
   const gltf = useGLTF(modelPath);
   const scene = gltf.scene;
 
@@ -60,7 +58,7 @@ function ProbeModel({ body, modelPath, allBodies, isSelected = false, onError, r
     // Calculate scale factor
     const calculatedScale = maxDimension > 0 ? targetSize / maxDimension : 0.3;
 
-    // Clamp scale to reasonable range - tighter range for consistency
+    // Clamp scale to reasonable range
     const finalScale = Math.max(0.2, Math.min(1.0, calculatedScale));
 
     // Apply custom scale from resource metadata
@@ -118,6 +116,17 @@ function ProbeModel({ body, modelPath, allBodies, isSelected = false, onError, r
   // Get offset description if this probe has one
   const offsetDesc = renderPosition.hasOffset ? getOffsetDescription(body, allBodies) : null;
 
+  // Generate label texture
+  // eslint-disable-next-line react-hooks/rules-of-hooks
+  const labelTexture = useMemo(() => {
+    return createLabelTexture(
+      body.name_zh || body.name,
+      offsetDesc,
+      `${distance.toFixed(2)} AU`,
+      '#00ffff'
+    );
+  }, [body.name, body.name_zh, offsetDesc, distance]);
+
   return (
     <group position={[scaledPos.x, scaledPos.z, scaledPos.y]} ref={groupRef}>
       <primitive
@@ -125,37 +134,27 @@ function ProbeModel({ body, modelPath, allBodies, isSelected = false, onError, r
         scale={optimalScale}
       />
       
-      {/* Name label */}
-      <Html
-        position={[0, optimalScale * 2, 0]}
-        center
-        distanceFactor={15}
-        style={{
-          color: '#00ffff',
-          fontSize: '9px', // 从 12px 减小到 9px
-          fontWeight: 'bold',
-          textShadow: '0 0 6px rgba(0,255,255,0.8)',
-          pointerEvents: 'none',
-          userSelect: 'none',
-          whiteSpace: 'nowrap',
-          opacity: isSelected ? 1 : 0.4, // 未选中时更暗淡
-          transition: 'opacity 0.3s ease',
-        }}
-      >
-        {body.name_zh || body.name}
-        {offsetDesc && (
-          <>
-            <br />
-            <span style={{ fontSize: '7px', color: '#ffaa00', opacity: isSelected ? 0.9 : 0.5 }}> {/* 从 10px 减小到 7px */}
-              {offsetDesc}
-            </span>
-          </>
-        )}
-        <br />
-        <span style={{ fontSize: '7px', opacity: isSelected ? 0.8 : 0.3 }}> {/* 从 10px 减小到 7px */}
-          {distance.toFixed(2)} AU
-        </span>
-      </Html>
+      {/* Name label with CanvasTexture */}
+      {labelTexture && (
+        <Billboard
+          position={[0, optimalScale * 2.5, 0]}
+          follow={true}
+          lockX={false}
+          lockY={false}
+          lockZ={false}
+        >
+          <mesh scale={[2.5, 1.25, 1]}>
+            <planeGeometry />
+            <meshBasicMaterial 
+              map={labelTexture} 
+              transparent 
+              opacity={isSelected ? 1 : 0.6} 
+              depthWrite={false}
+              toneMapped={false}
+            />
+          </mesh>
+        </Billboard>
+      )}
     </group>
   );
 }
@@ -177,6 +176,16 @@ function ProbeFallback({ body, allBodies, isSelected = false }: { body: Celestia
   // Get offset description if this probe has one
   const offsetDesc = renderPosition.hasOffset ? getOffsetDescription(body, allBodies) : null;
 
+  // Generate label texture
+  const labelTexture = useMemo(() => {
+    return createLabelTexture(
+      body.name_zh || body.name,
+      offsetDesc,
+      `${distance.toFixed(2)} AU`,
+      '#ff6666'
+    );
+  }, [body.name, body.name_zh, offsetDesc, distance]);
+
   return (
     <group position={[scaledPos.x, scaledPos.z, scaledPos.y]}>
       <mesh>
@@ -184,37 +193,27 @@ function ProbeFallback({ body, allBodies, isSelected = false }: { body: Celestia
         <meshStandardMaterial color="#ff0000" emissive="#ff0000" emissiveIntensity={0.8} />
       </mesh>
 
-      {/* Name label */}
-      <Html
-        position={[0, 1, 0]}
-        center
-        distanceFactor={15}
-        style={{
-          color: '#ff6666',
-          fontSize: '9px', // 从 12px 减小到 9px
-          fontWeight: 'bold',
-          textShadow: '0 0 6px rgba(255,0,0,0.8)',
-          pointerEvents: 'none',
-          userSelect: 'none',
-          whiteSpace: 'nowrap',
-          opacity: isSelected ? 1 : 0.4, // 未选中时更暗淡
-          transition: 'opacity 0.3s ease',
-        }}
-      >
-        {body.name_zh || body.name}
-        {offsetDesc && (
-          <>
-            <br />
-            <span style={{ fontSize: '7px', color: '#ffaa00', opacity: isSelected ? 0.9 : 0.5 }}> {/* 从 10px 减小到 7px */}
-              {offsetDesc}
-            </span>
-          </>
-        )}
-        <br />
-        <span style={{ fontSize: '7px', opacity: isSelected ? 0.8 : 0.3 }}> {/* 从 10px 减小到 7px */}
-          {distance.toFixed(2)} AU
-        </span>
-      </Html>
+      {/* Name label with CanvasTexture */}
+      {labelTexture && (
+        <Billboard
+          position={[0, 1, 0]}
+          follow={true}
+          lockX={false}
+          lockY={false}
+          lockZ={false}
+        >
+          <mesh scale={[2.5, 1.25, 1]}>
+            <planeGeometry />
+            <meshBasicMaterial 
+              map={labelTexture} 
+              transparent 
+              opacity={isSelected ? 1 : 0.6} 
+              depthWrite={false}
+              toneMapped={false}
+            />
+          </mesh>
+        </Billboard>
+      )}
     </group>
   );
 }

frontend/src/components/ProbeList.tsx

@@ -24,16 +24,24 @@ export function ProbeList({ probes, planets, onBodySelect, selectedBody, onReset
 
   // Calculate distance for sorting
   const calculateDistance = (body: CelestialBody) => {
+    if (!body.positions || body.positions.length === 0) {
+      return Infinity; // Bodies without positions go to the end
+    }
     const pos = body.positions[0];
     return Math.sqrt(pos.x ** 2 + pos.y ** 2 + pos.z ** 2);
   };
 
   const processBodies = (list: CelestialBody[]) => {
     return list
-      .filter(b =>
-        (b.name_zh || b.name).toLowerCase().includes(searchTerm.toLowerCase()) &&
-        b.type !== 'star' // Exclude Sun from list
-      )
+      .filter(b => {
+        // Filter out bodies without positions
+        if (!b.positions || b.positions.length === 0) {
+          return false;
+        }
+        // Filter by search term and type
+        return (b.name_zh || b.name).toLowerCase().includes(searchTerm.toLowerCase()) &&
+               b.type !== 'star'; // Exclude Sun from list
+      })
       .map(body => ({
         body,
         distance: calculateDistance(body)

frontend/src/components/Scene.tsx

@@ -28,9 +28,26 @@ interface SceneProps {
   onBodySelect?: (body: CelestialBodyType | null) => void;
   resetTrigger?: number;
   toast: ToastContextValue; // Add toast prop
+  onViewDetails?: (body: CelestialBodyType) => void; // Add prop
 }
 
-export function Scene({ bodies, selectedBody, trajectoryPositions = [], showOrbits = true, onBodySelect, resetTrigger = 0, toast }: SceneProps) {
+export function Scene({ bodies, selectedBody, trajectoryPositions = [], showOrbits = true, onBodySelect, resetTrigger = 0, toast, onViewDetails }: SceneProps) {
+  // Debug: log what Scene receives
+  useEffect(() => {
+    console.log('[Scene] Received bodies:', {
+      totalBodies: bodies.length,
+      bodiesWithPositions: bodies.filter(b => b.positions && b.positions.length > 0).length,
+      celestialBodies: bodies.filter(b => b.type !== 'probe').length,
+      probes: bodies.filter(b => b.type === 'probe').length,
+      sample: bodies.slice(0, 3).map(b => ({
+        id: b.id,
+        name: b.name,
+        type: b.type,
+        hasPositions: b.positions && b.positions.length > 0
+      }))
+    });
+  }, [bodies]);
+
   // State to control info panel visibility (independent of selection)
   const [showInfoPanel, setShowInfoPanel] = useState(true);
 
@@ -172,7 +189,12 @@ export function Scene({ bodies, selectedBody, trajectoryPositions = [], showOrbi
         {/* Dynamic Focus Info Label */}
         {selectedBody && showInfoPanel && (
           <Html position={focusInfoPosition} center zIndexRange={[100, 0]}>
-            <FocusInfo body={selectedBody} onClose={() => setShowInfoPanel(false)} toast={toast} />
+            <FocusInfo 
+              body={selectedBody} 
+              onClose={() => setShowInfoPanel(false)} 
+              toast={toast} 
+              onViewDetails={onViewDetails} 
+            />
           </Html>
         )}
       </Canvas>

frontend/src/components/Stars.tsx

@@ -2,9 +2,10 @@
  * Stars component - renders nearby stars in 3D space
  */
 import { useEffect, useState, useMemo } from 'react';
-import { Text, Billboard } from '@react-three/drei';
+import { Billboard } from '@react-three/drei';
 import * as THREE from 'three';
 import { request } from '../utils/request';
+import { createLabelTexture } from '../utils/labelTexture';
 
 interface Star {
   name: string;
@@ -14,6 +15,8 @@ interface Star {
   dec: number; // Declination in degrees
   magnitude: number;
   color: string;
+  position: THREE.Vector3;
+  size: number;
 }
 
 /**
@@ -46,6 +49,53 @@ function magnitudeToSize(magnitude: number): number {
   return Math.max(5, 20 - normalized * 1.2);
 }
 
+// Sub-component for individual star to handle label texture efficiently
+function StarObject({ star, geometry }: { star: Star; geometry: THREE.SphereGeometry }) {
+  // Generate label texture
+  const labelTexture = useMemo(() => {
+    return createLabelTexture(star.name_zh, null, "", "#FFFFFF");
+  }, [star.name_zh]);
+
+  return (
+    <group>
+      {/* Star sphere */}
+      <mesh position={star.position} geometry={geometry} scale={[star.size, star.size, star.size]}>
+        <meshBasicMaterial
+          color={star.color}
+          transparent
+          opacity={0.9}
+          blending={THREE.AdditiveBlending}
+        />
+      </mesh>
+
+      {/* Star glow */}
+      <mesh position={star.position} geometry={geometry} scale={[star.size * 2, star.size * 2, star.size * 2]}>
+        <meshBasicMaterial
+          color={star.color}
+          transparent
+          opacity={0.2}
+          blending={THREE.AdditiveBlending}
+        />
+      </mesh>
+
+      {/* Star name label - positioned radially outward from star */}
+      {labelTexture && (
+        <Billboard position={star.position.clone().multiplyScalar(1.05)}>
+          <mesh scale={[200, 100, 1]}>
+            <planeGeometry />
+            <meshBasicMaterial 
+              map={labelTexture} 
+              transparent 
+              depthWrite={false}
+              toneMapped={false}
+            />
+          </mesh>
+        </Billboard>
+      )}
+    </group>
+  );
+}
+
 export function Stars() {
   const [stars, setStars] = useState<Star[]>([]);
 
@@ -55,82 +105,39 @@ export function Stars() {
       .then((res) => {
         const data = res.data;
         // API returns { category, items: [{ id, name, name_zh, data: {...} }] }
-        const starData = data.items.map((item: any) => ({
-          name: item.name,
-          name_zh: item.name_zh,
-          distance_ly: item.data.distance_ly,
-          ra: item.data.ra,
-          dec: item.data.dec,
-          magnitude: item.data.magnitude,
-          color: item.data.color,
-        }));
+        const starData = data.items.map((item: any) => {
+          // Place all stars on a celestial sphere at fixed distance (5000 units)
+          const position = raDecToCartesian(item.data.ra, item.data.dec, 5000);
+          const size = magnitudeToSize(item.data.magnitude);
+
+          return {
+            name: item.name,
+            name_zh: item.name_zh,
+            distance_ly: item.data.distance_ly,
+            ra: item.data.ra,
+            dec: item.data.dec,
+            magnitude: item.data.magnitude,
+            color: item.data.color,
+            position,
+            size
+          };
+        });
         setStars(starData);
       })
       .catch((err) => console.error('Failed to load stars:', err));
   }, []);
 
-  const starData = useMemo(() => {
-    return stars.map((star) => {
-      // Place all stars on a celestial sphere at fixed distance (5000 units)
-      // This way they appear as background objects, similar to constellations
-      const position = raDecToCartesian(star.ra, star.dec, 5000);
-
-      // Size based on brightness (magnitude)
-      const size = magnitudeToSize(star.magnitude);
-
-      return {
-        ...star,
-        position,
-        size,
-      };
-    });
-  }, [stars]);
-
   // Reuse geometry for all stars to improve performance
   const sphereGeometry = useMemo(() => new THREE.SphereGeometry(1, 16, 16), []);
 
-  if (starData.length === 0) {
+  if (stars.length === 0) {
     return null;
   }
 
   return (
     <group>
-      {starData.map((star) => (
-        <group key={star.name}>
-          {/* Star sphere */}
-          <mesh position={star.position} geometry={sphereGeometry} scale={[star.size, star.size, star.size]}>
-            <meshBasicMaterial
-              color={star.color}
-              transparent
-              opacity={0.9}
-              blending={THREE.AdditiveBlending}
-            />
-          </mesh>
-
-          {/* Star glow */}
-          <mesh position={star.position} geometry={sphereGeometry} scale={[star.size * 2, star.size * 2, star.size * 2]}>
-            <meshBasicMaterial
-              color={star.color}
-              transparent
-              opacity={0.2}
-              blending={THREE.AdditiveBlending}
-            />
-          </mesh>
-
-          {/* Star name label - positioned radially outward from star */}
-          <Billboard position={star.position.clone().multiplyScalar(1.05)}>
-            <Text
-              fontSize={40} // Increased font size
-              color="#FFFFFF"
-              anchorX="center"
-              anchorY="middle"
-              outlineWidth={2}
-              outlineColor="#000000"
-            >
-              {star.name_zh}
-            </Text>
-          </Billboard>
-        </group>
+      {stars.map((star) => (
+        <StarObject key={star.name} star={star} geometry={sphereGeometry} />
       ))}
     </group>
   );

frontend/src/hooks/useHistoricalData.ts

@@ -18,6 +18,9 @@ export function useHistoricalData(selectedDate: Date | null) {
       return;
     }
 
+    // Track if this effect instance is active
+    let isActive = true;
+
     // 创建午夜时间戳
     const targetDate = new Date(selectedDate);
     targetDate.setUTCHours(0, 0, 0, 0);
@@ -42,19 +45,30 @@ export function useHistoricalData(selectedDate: Date | null) {
           '1d'
         );
 
-        setBodies(data.bodies);
-        lastFetchedDateRef.current = dateKey; // 记录已请求的时间
-
-        console.log(`[useHistoricalData] Loaded ${data.bodies.length} bodies`);
+        // Only update state if this effect is still active
+        if (isActive) {
+          setBodies(data.bodies);
+          lastFetchedDateRef.current = dateKey; // 记录已请求的时间
+          console.log(`[useHistoricalData] Loaded ${data.bodies.length} bodies`);
+          setLoading(false);
+        } else {
+          console.log(`[useHistoricalData] Ignored stale data for ${dateKey}`);
+        }
       } catch (err) {
-        console.error('Failed to fetch historical data:', err);
-        setError(err instanceof Error ? err.message : 'Unknown error');
-      } finally {
-        setLoading(false);
+        if (isActive) {
+          console.error('Failed to fetch historical data:', err);
+          setError(err instanceof Error ? err.message : 'Unknown error');
+          setLoading(false);
+        }
       }
     };
 
     loadHistoricalData();
+
+    // Cleanup function
+    return () => {
+      isActive = false;
+    };
   }, [selectedDate]);
 
   return { bodies, loading, error };

frontend/src/hooks/useSpaceData.ts

@@ -27,16 +27,44 @@ export function useSpaceData() {
 
         // Use cutoff date instead of current date
         // Set to UTC midnight for consistency
-        const targetDate = new Date(cutoffDate);
+        const targetDate = new Date(cutoffDate!);
         targetDate.setUTCHours(0, 0, 0, 0);
 
+        console.log('[useSpaceData] Loading data for date:', targetDate.toISOString());
+
         const data = await fetchCelestialPositions(
           targetDate.toISOString(),
           targetDate.toISOString(), // Same as start - single point in time
           '1d' // Use 1d step for consistency
         );
 
+        console.log('[useSpaceData] API response:', {
+          totalBodies: data.bodies.length,
+          bodiesWithPositions: data.bodies.filter(b => b.positions && b.positions.length > 0).length,
+          sample: data.bodies.slice(0, 2).map(b => ({
+            id: b.id,
+            name: b.name,
+            type: b.type,
+            hasPositions: b.positions && b.positions.length > 0,
+            positionCount: b.positions?.length || 0,
+            firstPosition: b.positions?.[0]
+          }))
+        });
+
+        // Check if positions have the expected structure
+        const firstBody = data.bodies[0];
+        if (firstBody && firstBody.positions && firstBody.positions.length > 0) {
+          console.log('[useSpaceData] First body position structure:', {
+            body: firstBody.name,
+            position: firstBody.positions[0],
+            hasX: 'x' in firstBody.positions[0],
+            hasY: 'y' in firstBody.positions[0],
+            hasZ: 'z' in firstBody.positions[0]
+          });
+        }
+
         setBodies(data.bodies);
+        console.log('[useSpaceData] State updated with', data.bodies.length, 'bodies');
       } catch (err) {
         console.error('Failed to fetch celestial data:', err);
         setError(err instanceof Error ? err.message : 'Unknown error');

frontend/src/pages/admin/AdminLayout.tsx

@@ -178,7 +178,7 @@ export function AdminLayout() {
             color: '#fff',
           }}
         >
-          {collapsed ? '🌌' : '🌌 Cosmo'}
+          {collapsed ? '🌌' : '🌌 COSMO'}
         </div>
         <Menu
           theme="dark"

frontend/src/pages/admin/CelestialBodies.tsx

@@ -1,18 +1,25 @@
 import { useState, useEffect } from 'react';
-import { Modal, Form, Input, Select, Switch, InputNumber, Tag, Badge, Descriptions, Button, Space, Alert, Upload, Popconfirm, Row, Col } from 'antd';
+import { Modal, Form, Input, Select, Switch, InputNumber, Tag, Badge, Descriptions, Button, Space, Alert, Upload, Popconfirm, Row, Col, Tabs } from 'antd';
 import { CheckCircleOutlined, CloseCircleOutlined, SearchOutlined, UploadOutlined, DeleteOutlined } from '@ant-design/icons';
 import type { UploadFile } from 'antd/es/upload/interface';
 import type { ColumnsType } from 'antd/es/table';
+import MdEditor from 'react-markdown-editor-lite';
+import MarkdownIt from 'markdown-it';
+import 'react-markdown-editor-lite/lib/index.css';
+
 import { DataTable } from '../../components/admin/DataTable';
 import { request } from '../../utils/request';
 import { useToast } from '../../contexts/ToastContext';
 
+const MdEditorParser = new MarkdownIt();
+
 interface CelestialBody {
   id: string;
   name: string;
   name_zh: string;
   type: string;
   description: string;
+  details?: string; // Added details field
   is_active: boolean;
   resources?: {
     [key: string]: Array<{
@@ -36,6 +43,7 @@ export function CelestialBodies() {
   const [searchQuery, setSearchQuery] = useState('');
   const [uploading, setUploading] = useState(false);
   const [refreshResources, setRefreshResources] = useState(0);
+  const [activeTabKey, setActiveTabKey] = useState('basic'); // State for active tab
   const toast = useToast();
 
   useEffect(() => {
@@ -72,6 +80,7 @@ export function CelestialBodies() {
     setEditingRecord(null);
     form.resetFields();
     setSearchQuery('');
+    setActiveTabKey('basic'); // Reset to basic tab
     // Default values
     form.setFieldsValue({ is_active: true, type: 'probe' });
     setIsModalOpen(true);
@@ -91,6 +100,28 @@ export function CelestialBodies() {
       });
 
       if (result.success) {
+        // Check if this body already exists in our database
+        const existingBody = data.find(b => b.id === result.data.id);
+
+        if (existingBody) {
+          Modal.warning({
+            title: '天体已存在',
+            content: (
+              <div>
+                <p>找到天体: <strong>{result.data.full_name}</strong></p>
+                <p>ID: <strong>{result.data.id}</strong></p>
+                <p style={{ color: '#faad14', marginTop: '10px' }}>
+                  ⚠️ 该天体已在数据库中，名称为: <strong>{existingBody.name}</strong>
+                </p>
+                <p style={{ fontSize: '12px', color: '#888' }}>
+                  如需修改，请在列表中直接编辑该天体。
+                </p>
+              </div>
+            ),
+          });
+          return;
+        }
+
         // Auto-fill form with search results
         form.setFieldsValue({
           id: result.data.id,
@@ -134,6 +165,7 @@ export function CelestialBodies() {
   const handleEdit = (record: CelestialBody) => {
     setEditingRecord(record);
     form.setFieldsValue(record);
+    setActiveTabKey('basic'); // Reset to basic tab
     setIsModalOpen(true);
   };
 
@@ -181,9 +213,22 @@ export function CelestialBodies() {
 
       setIsModalOpen(false);
       loadData();
-    } catch (error) {
+    } catch (error: any) {
       console.error(error);
-      // toast.error('操作失败'); // request interceptor might already handle this
+      // Check for specific error messages
+      if (error.response?.status === 400) {
+        const detail = error.response?.data?.detail;
+        if (detail && detail.includes('already exists')) {
+          toast.error(`天体已存在: ${values.id}`);
+        } else {
+          toast.error(detail || '请检查表单数据是否完整');
+        }
+      } else if (error.errorFields) {
+        // Validation error
+        toast.error('请填写所有必填字段');
+      } else {
+        toast.error(error.response?.data?.detail || '操作失败');
+      }
     }
   };
 
@@ -320,121 +365,135 @@ export function CelestialBodies() {
         open={isModalOpen}
         onOk={handleModalOk}
         onCancel={() => setIsModalOpen(false)}
-        width={800}
+        width={1000}
       >
         <Form
           form={form}
           layout="vertical"
         >
-          {!editingRecord && (
-            <>
-              <Alert
-                title="智能搜索提示"
-                description={
-                  <div>
-                    <p>推荐使用 <strong>JPL Horizons 数字 ID</strong> 进行搜索，可获得最准确的结果。</p>
-                    <p style={{ marginTop: 4 }}>
-                      示例：Hubble 的 ID 是 <code>-48</code>，Voyager 1 的 ID 是 <code>-31</code>
-                    </p>
-                    <p style={{ marginTop: 4, fontSize: '12px', color: '#666' }}>
-                      不知道 ID？可以先用名称搜索，系统会尽量提取 ID，或提示您手动确认。
-                    </p>
-                  </div>
-                }
-                type="info"
-                showIcon
-                style={{ marginBottom: 16 }}
-              />
-
-              <Form.Item label="从 NASA 数据库搜索">
-                <Space.Compact style={{ width: '100%' }}>
-                  <Input
-                    placeholder="输入数字 ID (推荐, 如: -48) 或名称 (如: Hubble)"
-                    value={searchQuery}
-                    onChange={(e) => setSearchQuery(e.target.value)}
-                    onPressEnter={handleNASASearch}
+          <Tabs activeKey={activeTabKey} onChange={setActiveTabKey}>
+            <Tabs.TabPane tab="基础信息" key="basic">
+              {!editingRecord && (
+                <>
+                  <Alert
+                    title="智能搜索提示"
+                    description={
+                      <div>
+                        <p>推荐使用 <strong>JPL Horizons 数字 ID</strong> 进行搜索，可获得最准确的结果。</p>
+                        <p style={{ marginTop: 4 }}>
+                          示例：Hubble 的 ID 是 <code>-48</code>，Voyager 1 的 ID 是 <code>-31</code>
+                        </p>
+                        <p style={{ marginTop: 4, fontSize: '12px', color: '#666' }}>
+                          不知道 ID？可以先用名称搜索，系统会尽量提取 ID，或提示您手动确认。
+                        </p>
+                      </div>
+                    }
+                    type="info"
+                    showIcon
+                    style={{ marginBottom: 16 }}
                   />
-                  <Button
-                    type="primary"
-                    icon={<SearchOutlined />}
-                    onClick={handleNASASearch}
-                    loading={searching}
+
+                  <Form.Item label="从 NASA 数据库搜索">
+                    <Space.Compact style={{ width: '100%' }}>
+                      <Input
+                        placeholder="输入数字 ID (推荐, 如: -48) 或名称 (如: Hubble)"
+                        value={searchQuery}
+                        onChange={(e) => setSearchQuery(e.target.value)}
+                        onPressEnter={handleNASASearch}
+                      />
+                      <Button
+                        type="primary"
+                        icon={<SearchOutlined />}
+                        onClick={handleNASASearch}
+                        loading={searching}
+                      >
+                        搜索
+                      </Button>
+                    </Space.Compact>
+                  </Form.Item>
+                </>
+              )}
+
+              <Row gutter={16}>
+                <Col span={12}>
+                  <Form.Item
+                    name="id"
+                    label="JPL Horizons ID"
+                    rules={[{ required: true, message: '请输入JPL Horizons ID' }]}
                   >
-                    搜索
-                  </Button>
-                </Space.Compact>
-              </Form.Item>
-            </>
-          )}
+                    <Input disabled={!!editingRecord} placeholder="例如：-31 (Voyager 1) 或 399 (Earth)" />
+                  </Form.Item>
+                </Col>
+                <Col span={12}>
+                  <Form.Item
+                    name="type"
+                    label="类型"
+                    rules={[{ required: true, message: '请选择类型' }]}
+                  >
+                    <Select>
+                      <Select.Option value="planet">行星</Select.Option>
+                      <Select.Option value="dwarf_planet">矮行星</Select.Option>
+                      <Select.Option value="satellite">卫星</Select.Option>
+                      <Select.Option value="probe">探测器</Select.Option>
+                      <Select.Option value="star">恒星</Select.Option>
+                      <Select.Option value="comet">彗星</Select.Option>
+                    </Select>
+                  </Form.Item>
+                </Col>
+              </Row>
 
-          <Row gutter={16}>
-            <Col span={12}>
-              <Form.Item
-                name="id"
-                label="JPL Horizons ID"
-                rules={[{ required: true, message: '请输入JPL Horizons ID' }]}
-              >
-                <Input disabled={!!editingRecord} placeholder="例如：-31 (Voyager 1) 或 399 (Earth)" />
-              </Form.Item>
-            </Col>
-            <Col span={12}>
-              <Form.Item
-                name="type"
-                label="类型"
-                rules={[{ required: true, message: '请选择类型' }]}
-              >
-                <Select>
-                  <Select.Option value="planet">行星</Select.Option>
-                  <Select.Option value="dwarf_planet">矮行星</Select.Option>
-                  <Select.Option value="satellite">卫星</Select.Option>
-                  <Select.Option value="probe">探测器</Select.Option>
-                  <Select.Option value="star">恒星</Select.Option>
-                  <Select.Option value="comet">彗星</Select.Option>
-                </Select>
-              </Form.Item>
-            </Col>
-          </Row>
+              <Row gutter={16}>
+                <Col span={12}>
+                  <Form.Item
+                    name="name"
+                    label="英文名"
+                    rules={[{ required: true, message: '请输入英文名' }]}
+                  >
+                    <Input placeholder="例如：Voyager 1" />
+                  </Form.Item>
+                </Col>
+                <Col span={12}>
+                  <Form.Item
+                    name="name_zh"
+                    label="中文名"
+                  >
+                    <Input placeholder="例如：旅行者1号" />
+                  </Form.Item>
+                </Col>
+              </Row>
 
-          <Row gutter={16}>
-            <Col span={12}>
               <Form.Item
-                name="name"
-                label="英文名"
-                rules={[{ required: true, message: '请输入英文名' }]}
+                name="description"
+                label="描述"
               >
-                <Input placeholder="例如：Voyager 1" />
+                <Input.TextArea rows={2} />
               </Form.Item>
-            </Col>
-            <Col span={12}>
-              <Form.Item
-                name="name_zh"
-                label="中文名"
-              >
-                <Input placeholder="例如：旅行者1号" />
+
+              {editingRecord && (
+                <ResourceManager
+                  bodyId={editingRecord.id}
+                  bodyType={editingRecord.type}
+                  resources={editingRecord.resources}
+                  hasResources={editingRecord.has_resources}
+                  onUpload={handleResourceUpload}
+                  onDelete={handleResourceDelete}
+                  uploading={uploading}
+                  refreshTrigger={refreshResources}
+                  toast={toast}
+                />
+              )}
+            </Tabs.TabPane>
+            <Tabs.TabPane tab="详细信息 (Markdown)" key="details">
+              <Form.Item name="details" style={{ marginBottom: 0 }}>
+                <MdEditor
+                  value={form.getFieldValue('details')}
+                  style={{ height: '500px' }}
+                  renderHTML={(text) => MdEditorParser.render(text)}
+                  onChange={({ text }) => form.setFieldsValue({ details: text })}
+                />
               </Form.Item>
-            </Col>
-          </Row>
-
-          <Form.Item
-            name="description"
-            label="描述"
-          >
-            <Input.TextArea rows={2} />
-          </Form.Item>
-
-          {editingRecord && (
-            <ResourceManager
-              bodyId={editingRecord.id}
-              bodyType={editingRecord.type}
-              resources={editingRecord.resources}
-              hasResources={editingRecord.has_resources}
-              onUpload={handleResourceUpload}
-              onDelete={handleResourceDelete}
-              uploading={uploading}
-              refreshTrigger={refreshResources}
-              toast={toast}
-            />
-          )}
+            </Tabs.TabPane>
+          </Tabs>
         </Form>
       </Modal>
     </>

frontend/src/pages/admin/NASADownload.tsx

@@ -17,13 +17,17 @@ import {
   Space,
   Progress,
   Calendar,
-  Alert
+  Alert,
+  Tag,
+  Modal,
+  Table
 } from 'antd';
 import {
   DownloadOutlined,
   CheckCircleOutlined,
   CloseCircleOutlined,
-  LoadingOutlined
+  LoadingOutlined,
+  DeleteOutlined
 } from '@ant-design/icons';
 import type { CheckboxChangeEvent } from 'antd/es/checkbox';
 import type { Dayjs } from 'dayjs';
@@ -60,10 +64,14 @@ export function NASADownload() {
     dayjs().startOf('month'),
     dayjs().endOf('month')
   ]);
-  const [availableDates, setAvailableDates] = useState<Set<string>>(new Set());
+  const [availableDates, setAvailableDates] = useState<Map<string, Set<string>>>(new Map());
   const [loadingDates, setLoadingDates] = useState(false);
   const [downloading, setDownloading] = useState(false);
+  const [deleting, setDeleting] = useState(false);
   const [downloadProgress, setDownloadProgress] = useState({ current: 0, total: 0 });
+  const [activeBodyForCalendar, setActiveBodyForCalendar] = useState<string | null>(null);
+  const [viewingDateData, setViewingDateData] = useState<{date: string; bodies: any[]} | null>(null);
+  const [loadingDateData, setLoadingDateData] = useState(false);
   const toast = useToast();
 
   // Get data cutoff date
@@ -85,8 +93,13 @@ export function NASADownload() {
   useEffect(() => {
     if (selectedBodies.length > 0) {
       loadAvailableDates();
+      // Set first selected body as active for calendar display
+      if (!activeBodyForCalendar || !selectedBodies.includes(activeBodyForCalendar)) {
+        setActiveBodyForCalendar(selectedBodies[0]);
+      }
     } else {
-      setAvailableDates(new Set());
+      setAvailableDates(new Map());
+      setActiveBodyForCalendar(null);
     }
   }, [selectedBodies, dateRange]);
 
@@ -107,26 +120,29 @@ export function NASADownload() {
 
     setLoadingDates(true);
     try {
-      const allDates = new Set<string>();
+      const newAvailableDates = new Map<string, Set<string>>();
 
-      // Load available dates for the first selected body
-      const bodyId = selectedBodies[0];
-      const startDate = dateRange[0].format('YYYY-MM-DD');
-      const endDate = dateRange[1].format('YYYY-MM-DD');
+      // Load available dates for ALL selected bodies
+      for (const bodyId of selectedBodies) {
+        const startDate = dateRange[0].format('YYYY-MM-DD');
+        const endDate = dateRange[1].format('YYYY-MM-DD');
 
-      const { data } = await request.get('/celestial/positions/download/status', {
-        params: {
-          body_id: bodyId,
-          start_date: startDate,
-          end_date: endDate
-        }
-      });
+        const { data } = await request.get('/celestial/positions/download/status', {
+          params: {
+            body_id: bodyId,
+            start_date: startDate,
+            end_date: endDate
+          }
+        });
 
-      data.available_dates.forEach((date: string) => {
-        allDates.add(date);
-      });
+        const bodyDates = new Set<string>();
+        data.available_dates.forEach((date: string) => {
+          bodyDates.add(date);
+        });
+        newAvailableDates.set(bodyId, bodyDates);
+      }
 
-      setAvailableDates(allDates);
+      setAvailableDates(newAvailableDates);
     } catch (error) {
       toast.error('加载数据状态失败');
     } finally {
@@ -164,20 +180,33 @@ export function NASADownload() {
     }
 
     let datesToDownload: string[] = [];
+    const today = dayjs();
 
     if (selectedDate) {
-      // Download single date
+      // Download single date - check if it's not in the future
+      if (selectedDate.isAfter(today, 'day')) {
+        toast.warning('不能下载未来日期的数据');
+        return;
+      }
       datesToDownload = [selectedDate.format('YYYY-MM-DD')];
     } else {
-      // Download all dates in range
+      // Download all dates in range - exclude future dates
       const start = dateRange[0];
       const end = dateRange[1];
       let current = start;
 
       while (current.isBefore(end) || current.isSame(end, 'day')) {
-        datesToDownload.push(current.format('YYYY-MM-DD'));
+        // Only include dates up to today
+        if (!current.isAfter(today, 'day')) {
+          datesToDownload.push(current.format('YYYY-MM-DD'));
+        }
         current = current.add(1, 'day');
       }
+
+      if (datesToDownload.length === 0) {
+        toast.warning('所选日期范围内没有可下载的数据（不能下载未来日期）');
+        return;
+      }
     }
 
     setDownloading(true);
@@ -215,13 +244,61 @@ export function NASADownload() {
     }
   };
 
+  const handleDelete = async () => {
+    if (selectedBodies.length === 0) {
+      toast.warning('请先选择至少一个天体');
+      return;
+    }
+
+    const start = dateRange[0];
+    const end = dateRange[1];
+    const datesToDelete: string[] = [];
+    let current = start;
+
+    // Build list of all dates in range (including future dates)
+    while (current.isBefore(end) || current.isSame(end, 'day')) {
+      datesToDelete.push(current.format('YYYY-MM-DD'));
+      current = current.add(1, 'day');
+    }
+
+    if (datesToDelete.length === 0) {
+      return;
+    }
+
+    Modal.confirm({
+      title: '确认删除',
+      content: `确定要删除 ${selectedBodies.length} 个天体在 ${datesToDelete.length} 天内的所有位置数据吗？此操作不可恢复。`,
+      okText: '确认删除',
+      okType: 'danger',
+      cancelText: '取消',
+      onOk: async () => {
+        setDeleting(true);
+        try {
+          const { data } = await request.post('/celestial/positions/delete', {
+            body_ids: selectedBodies,
+            dates: datesToDelete
+          });
+          
+          toast.success(data.message || '数据已删除');
+          loadAvailableDates(); // Refresh status
+        } catch (error) {
+          toast.error('删除失败');
+        } finally {
+          setDeleting(false);
+        }
+      }
+    });
+  };
+
   // Custom calendar cell renderer
   const dateCellRender = (value: Dayjs) => {
     const dateStr = value.format('YYYY-MM-DD');
-    const hasData = availableDates.has(dateStr);
     const inRange = value.isBetween(dateRange[0], dateRange[1], 'day', '[]');
 
-    if (!inRange) return null;
+    if (!inRange || !activeBodyForCalendar) return null;
+
+    const bodyDates = availableDates.get(activeBodyForCalendar);
+    const hasData = bodyDates?.has(dateStr) || false;
 
     return (
       <div style={{ textAlign: 'center', padding: '4px 0' }}>
@@ -239,9 +316,8 @@ export function NASADownload() {
     return current && current.isAfter(dayjs(), 'day');
   };
 
-  const handleCalendarDateClick = (date: Dayjs) => {
+  const handleCalendarDateClick = async (date: Dayjs) => {
     const dateStr = date.format('YYYY-MM-DD');
-    const hasData = availableDates.has(dateStr);
     const inRange = date.isBetween(dateRange[0], dateRange[1], 'day', '[]');
 
     if (!inRange) {
@@ -249,8 +325,22 @@ export function NASADownload() {
       return;
     }
 
+    if (date.isAfter(dayjs(), 'day')) {
+      toast.warning('不能下载未来日期的数据');
+      return;
+    }
+
+    if (!activeBodyForCalendar) {
+      toast.warning('请先选择天体');
+      return;
+    }
+
+    const bodyDates = availableDates.get(activeBodyForCalendar);
+    const hasData = bodyDates?.has(dateStr) || false;
+
     if (hasData) {
-      toast.info('该日期已有数据');
+      // Load and display data for this date
+      await loadDateData(dateStr);
       return;
     }
 
@@ -262,12 +352,74 @@ export function NASADownload() {
     handleDownload(date);
   };
 
+  const loadDateData = async (dateStr: string) => {
+    setLoadingDateData(true);
+    try {
+      // Query all selected bodies at once (comma-separated)
+      const bodyIdsToQuery = selectedBodies.filter(bodyId => {
+        const bodyDates = availableDates.get(bodyId);
+        return bodyDates?.has(dateStr);
+      });
+
+      if (bodyIdsToQuery.length === 0) {
+        setViewingDateData({ date: dateStr, bodies: [] });
+        setLoadingDateData(false);
+        return;
+      }
+
+      try {
+        // Query all bodies in one request
+        const { data } = await request.get('/celestial/positions', {
+          params: {
+            body_ids: bodyIdsToQuery.join(','),
+            start_time: `${dateStr}T00:00:00Z`,
+            end_time: `${dateStr}T00:00:00Z`
+          }
+        });
+
+        console.log(`Response for bodies ${bodyIdsToQuery.join(',')}:`, data);
+
+        const bodiesData = [];
+        const allBodies = Object.values(bodies).flat();
+
+        // Process each body in the response
+        if (data.bodies && data.bodies.length > 0) {
+          for (const bodyData of data.bodies) {
+            if (bodyData.positions && bodyData.positions.length > 0) {
+              const body = allBodies.find(b => b.id === bodyData.id);
+              const pos = bodyData.positions[0];
+              bodiesData.push({
+                id: bodyData.id,
+                name: body?.name_zh || body?.name || bodyData.name || bodyData.id,
+                x: pos.x,
+                y: pos.y,
+                z: pos.z,
+                vx: pos.vx,
+                vy: pos.vy,
+                vz: pos.vz,
+                time: pos.time
+              });
+            }
+          }
+        }
+
+        console.log('Processed bodies data:', bodiesData);
+        setViewingDateData({ date: dateStr, bodies: bodiesData });
+      } catch (error) {
+        console.error(`Failed to load data:`, error);
+        toast.error('加载数据失败');
+      }
+    } finally {
+      setLoadingDateData(false);
+    }
+  };
+
   return (
     <div>
       {/* Data Cutoff Date Display */}
       {cutoffDate && (
         <Alert
-          message={`数据截止日期: ${cutoffDate.getFullYear()}/${String(cutoffDate.getMonth() + 1).padStart(2, '0')}/${String(cutoffDate.getDate()).padStart(2, '0')}`}
+          title={`数据截止日期: ${cutoffDate.getFullYear()}/${String(cutoffDate.getMonth() + 1).padStart(2, '0')}/${String(cutoffDate.getDate()).padStart(2, '0')}`}
           description="选择左侧天体，右侧日历将显示数据可用性。点击未下载的日期可下载该天的位置数据（00:00 UTC）。"
           type="success"
           showIcon
@@ -310,14 +462,14 @@ export function NASADownload() {
                   </div>
                 ),
                 children: (
-                  <Space direction="vertical" style={{ width: '100%' }}>
+                  <Space orientation="vertical" style={{ width: '100%' }}>
                     {typeBodies.map((body) => (
                       <Checkbox
                         key={body.id}
                         checked={selectedBodies.includes(body.id)}
                         onChange={(e) => handleBodySelect(body.id, e.target.checked)}
                       >
-                        {body.name_zh || body.name}
+                        {body.name_zh || body.name} ({body.id})
                         {!body.is_active && <Badge status="default" text="(未激活)" style={{ marginLeft: 8 }} />}
                       </Checkbox>
                     ))}
@@ -331,7 +483,7 @@ export function NASADownload() {
         {/* Right: Date Selection and Calendar */}
         <Col span={16}>
           <Card
-            title="选择下载日期"
+            title="选择日期"
             extra={
               <Space>
                 <RangePicker
@@ -341,19 +493,67 @@ export function NASADownload() {
                   format="YYYY-MM-DD"
                   allowClear={false}
                 />
+                <Button
+                  danger
+                  icon={<DeleteOutlined />}
+                  onClick={handleDelete}
+                  disabled={selectedBodies.length === 0 || downloading || deleting}
+                  loading={deleting}
+                >
+                  清空区段数据
+                </Button>
                 <Button
                   type="primary"
                   icon={<DownloadOutlined />}
                   onClick={() => handleDownload()}
-                  disabled={selectedBodies.length === 0}
+                  disabled={selectedBodies.length === 0 || downloading || deleting}
                   loading={downloading}
                 >
-                  下载范围内数据 (后台任务)
+                  下载区段数据
                 </Button>
               </Space>
             }
           >
             <Spin spinning={loadingDates} indicator={<LoadingOutlined spin />}>
+              {/* Body selector for calendar view when multiple bodies selected */}
+              {selectedBodies.length > 1 && (
+                <div style={{ marginBottom: 16 }}>
+                  <Text strong>天体列表：</Text>
+                  <Space wrap style={{ marginLeft: 8 }}>
+                    {selectedBodies.map(bodyId => {
+                      const allBodies = Object.values(bodies).flat();
+                      const body = allBodies.find(b => b.id === bodyId);
+                      return (
+                        <Tag
+                          key={bodyId}
+                          color={bodyId === activeBodyForCalendar ? 'blue' : 'default'}
+                          style={{ cursor: 'pointer' }}
+                          onClick={() => setActiveBodyForCalendar(bodyId)}
+                        >
+                          {body?.name_zh || body?.name || bodyId} ({bodyId})
+                        </Tag>
+                      );
+                    })}
+                  </Space>
+                  <div style={{ marginTop: 8, fontSize: '12px', color: '#888' }}>
+                    点击标签切换查看不同天体的数据状态
+                  </div>
+                </div>
+              )}
+
+              {selectedBodies.length === 1 && activeBodyForCalendar && (
+                <div style={{ marginBottom: 16 }}>
+                  <Text strong>当前天体：</Text>
+                  <Tag color="blue" style={{ marginLeft: 8 }}>
+                    {(() => {
+                      const allBodies = Object.values(bodies).flat();
+                      const body = allBodies.find(b => b.id === activeBodyForCalendar);
+                      return `${body?.name_zh || body?.name || activeBodyForCalendar} (${activeBodyForCalendar})`;
+                    })()}
+                  </Tag>
+                </div>
+              )}
+
               <div style={{ marginBottom: 16 }}>
                 <Space>
                   <Badge status="success" text="已有数据" />
@@ -385,6 +585,77 @@ export function NASADownload() {
           </Card>
         </Col>
       </Row>
+
+      {/* Data Viewer Modal */}
+      <Modal
+        title={`位置数据 - ${viewingDateData?.date || ''}`}
+        open={!!viewingDateData}
+        onCancel={() => setViewingDateData(null)}
+        footer={null}
+        width={900}
+      >
+        {viewingDateData && (
+          <Spin spinning={loadingDateData}>
+            <Table
+              dataSource={viewingDateData.bodies}
+              rowKey="id"
+              pagination={false}
+              size="small"
+              scroll={{ x: true }}
+              columns={[
+                {
+                  title: '天体',
+                  dataIndex: 'name',
+                  key: 'name',
+                  fixed: 'left',
+                  width: 120
+                },
+                {
+                  title: 'X (AU)',
+                  dataIndex: 'x',
+                  key: 'x',
+                  render: (val: number) => val?.toFixed(6) || '-'
+                },
+                {
+                  title: 'Y (AU)',
+                  dataIndex: 'y',
+                  key: 'y',
+                  render: (val: number) => val?.toFixed(6) || '-'
+                },
+                {
+                  title: 'Z (AU)',
+                  dataIndex: 'z',
+                  key: 'z',
+                  render: (val: number) => val?.toFixed(6) || '-'
+                },
+                {
+                  title: 'VX (AU/day)',
+                  dataIndex: 'vx',
+                  key: 'vx',
+                  render: (val: number) => val?.toFixed(8) || '-'
+                },
+                {
+                  title: 'VY (AU/day)',
+                  dataIndex: 'vy',
+                  key: 'vy',
+                  render: (val: number) => val?.toFixed(8) || '-'
+                },
+                {
+                  title: 'VZ (AU/day)',
+                  dataIndex: 'vz',
+                  key: 'vz',
+                  render: (val: number) => val?.toFixed(8) || '-'
+                }
+              ]}
+            />
+            {viewingDateData.bodies.length === 0 && (
+              <div style={{ textAlign: 'center', padding: '20px', color: '#999' }}>
+                该日期暂无数据
+              </div>
+            )}
+          </Spin>
+        )}
+      </Modal>
     </div>
   );
 }

frontend/src/pages/admin/Tasks.tsx

@@ -147,28 +147,32 @@ export function Tasks() {
         width={800}
       >
         {currentTask && (
-          <Descriptions bordered column={1}>
-            <Descriptions.Item label="任务ID">{currentTask.id}</Descriptions.Item>
-            <Descriptions.Item label="类型">{currentTask.task_type}</Descriptions.Item>
-            <Descriptions.Item label="状态">
-               <Badge status={currentTask.status === 'completed' ? 'success' : currentTask.status === 'running' ? 'processing' : 'default'} text={currentTask.status} />
-            </Descriptions.Item>
-            <Descriptions.Item label="描述">{currentTask.description}</Descriptions.Item>
-            {currentTask.error_message && (
-              <Descriptions.Item label="错误信息">
-                <Text type="danger">{currentTask.error_message}</Text>
+          <div style={{ maxWidth: '100%', overflowX: 'auto' }}>
+            <Descriptions bordered column={1}>
+              <Descriptions.Item label="任务ID">{currentTask.id}</Descriptions.Item>
+              <Descriptions.Item label="类型">{currentTask.task_type}</Descriptions.Item>
+              <Descriptions.Item label="状态">
+                 <Badge status={currentTask.status === 'completed' ? 'success' : currentTask.status === 'running' ? 'processing' : 'default'} text={currentTask.status} />
               </Descriptions.Item>
-            )}
-            <Descriptions.Item label="结果">
-              <div className="bg-gray-100 p-2 rounded max-h-60 overflow-auto text-xs font-mono">
-                {currentTask.result ? (
-                    <pre>{JSON.stringify(currentTask.result, null, 2)}</pre>
-                ) : (
-                    <span className="text-gray-400">暂无结果</span>
-                )}
-              </div>
-            </Descriptions.Item>
-          </Descriptions>
+              <Descriptions.Item label="描述">{currentTask.description}</Descriptions.Item>
+              {currentTask.error_message && (
+                <Descriptions.Item label="错误信息">
+                  <Text type="danger" style={{ wordBreak: 'break-word' }}>{currentTask.error_message}</Text>
+                </Descriptions.Item>
+              )}
+              <Descriptions.Item label="结果">
+                <div className="bg-gray-100 p-2 rounded max-h-60 overflow-auto text-xs font-mono" style={{ maxWidth: '100%' }}>
+                  {currentTask.result ? (
+                      <pre style={{ margin: 0, whiteSpace: 'pre-wrap', wordBreak: 'break-word' }}>
+                        {JSON.stringify(currentTask.result, null, 2)}
+                      </pre>
+                  ) : (
+                      <span className="text-gray-400">暂无结果</span>
+                  )}
+                </div>
+              </Descriptions.Item>
+            </Descriptions>
+          </div>
         )}
       </Modal>
     </div>

frontend/src/utils/labelTexture.ts

@@ -0,0 +1,71 @@
+import * as THREE from 'three';
+
+/**
+ * Creates a texture containing text labels for celestial bodies.
+ * Uses Canvas 2D API to render system fonts, avoiding the need for external font files.
+ */
+export function createLabelTexture(name: string, subtext: string | null, distance: string, color: string): THREE.CanvasTexture | null {
+  const canvas = document.createElement('canvas');
+  // Power of 2 dimensions for better compatibility
+  canvas.width = 512;
+  canvas.height = 256;
+  const ctx = canvas.getContext('2d');
+  if (!ctx) return null;
+
+  // Clear background
+  ctx.clearRect(0, 0, 512, 256);
+  
+  // Common settings
+  ctx.textAlign = 'center';
+  ctx.shadowColor = 'rgba(0,0,0,0.8)';
+  ctx.shadowBlur = 6;
+  
+  // Check if we only have a name (Simple Label Mode)
+  const isSimpleLabel = !subtext && !distance;
+
+  if (isSimpleLabel) {
+    // Center the single name vertically
+    ctx.textBaseline = 'middle';
+    // Use a slightly larger font for simple labels (like stars/constellations)
+    ctx.font = 'bold 72px -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Microsoft YaHei", sans-serif';
+    ctx.fillStyle = color;
+    ctx.fillText(name, 256, 128);
+  } else {
+    // Complex Label Mode (Name + Subtext + Distance)
+    ctx.textBaseline = 'top';
+    
+    // 1. Name (Large, Top)
+    ctx.font = 'bold 64px -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Microsoft YaHei", sans-serif';
+    ctx.fillStyle = color;
+    ctx.fillText(name, 256, 10);
+    
+    let nextY = 90;
+
+    // 2. Subtext/Offset (Medium, Middle)
+    if (subtext) {
+      ctx.font = 'bold 42px -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Microsoft YaHei", sans-serif';
+      ctx.fillStyle = '#ffaa00'; // Orange for warning/info
+      ctx.fillText(subtext, 256, nextY);
+      nextY += 60;
+    } else {
+      // Add some spacing if no subtext
+      nextY += 20;
+    }
+    
+    // 3. Distance (Small, Bottom)
+    if (distance) {
+      ctx.font = '36px "SF Mono", "Roboto Mono", Menlo, monospace';
+      ctx.fillStyle = color;
+      // Reduce opacity for distance to make it less distracting
+      ctx.globalAlpha = 0.7; 
+      ctx.fillText(distance, 256, nextY);
+    }
+  }
+
+  const texture = new THREE.CanvasTexture(canvas);
+  // texture.minFilter = THREE.LinearMipMapLinearFilter; // Can cause artifacts if not careful
+  texture.minFilter = THREE.LinearFilter;
+  texture.needsUpdate = true;
+  
+  return texture;
+}